Low-noise bearing axle box

Abstract

The utility model relates to the technical field of machine manufacturing, in particular to a low-noise bearing axle box which comprises a base, a fixing outer ring is connected to the inner bottom wall of the base in an interference fit mode, a plurality of screw holes are formed in the front side end wall face and the rear side end wall face of the fixing outer ring, and a supporting seat is arranged on the inner wall of the fixing outer ring through a plurality of connecting seats. A groove is formed in the outer wall of the connecting base, a fixing inner ring is connected to the inner wall of the supporting base in an interference fit mode, one end of a liquid inlet pipe is arranged on the top end wall of the fixing outer ring, and one end of a liquid discharging pipe is arranged on the bottom end wall of the fixing outer ring. The wrapping type heat conduction oil cavity is formed outside the axle box, and the whole cavity is filled with heat conduction oil, so that when a bearing in the axle box generates vibration due to friction between a roller and a raceway, relative movement of a retainer and other parts and the like, the heat conduction oil can buffer and absorb the vibration by virtue of the damping characteristic of the heat conduction oil, and the vibration is prevented from being damaged. Outward transmission of vibration is effectively inhibited, noise generated by vibration conversion is reduced, the acoustic environment during equipment operation is improved, potential harm to hearing of operators is reduced, and auditory fatigue is relieved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical manufacturing technology, specifically to a low-noise bearing housing. Background Technology

[0002] Among numerous mechanical devices, bearing housings are among the most critical components, playing a vital role in supporting rotating shafts, bearing loads, and ensuring stable equipment operation. For example, in various industrial motors, the running gear of rail vehicles, and numerous transmission devices, the performance of bearing housings directly affects the overall working condition and service life of the equipment.

[0003] However, traditional bearing housings currently face many problems that urgently need to be addressed in practical applications.

[0004] First, noise is a significant issue. During equipment operation, the bearings inside the axle box inevitably vibrate due to rolling and sliding friction between the rollers and raceways, as well as the relative movement of the cage and other components. This vibration is then converted into noise and propagated outwards. Furthermore, with prolonged use, the bearings and other components within the axle box gradually wear down. For example, scratches and pits may appear on the raceway surface, and the roundness of the rollers may change. This reduces the precision of the fit between components, making the friction conditions increasingly complex and irregular, leading to a continuous increase in vibration amplitude and consequently, louder noise. This continuously increasing and significant noise not only affects the operator's working environment and easily causes auditory fatigue, but prolonged exposure to high-decibel noise can also damage the operator's hearing.

[0005] Secondly, inadequate heat dissipation is also a significant problem faced by existing axle boxes. During equipment operation, the bearings and axle box as a whole generate heat due to friction and other factors. If this heat cannot be dissipated effectively and promptly, the internal temperature of the axle box will continuously rise. On the one hand, high temperatures accelerate the aging and failure of bearing grease, reducing its lubrication performance and further exacerbating internal friction, leading to increased noise and accelerated component wear. On the other hand, excessively high temperatures may also cause thermal expansion of the axle box material, altering the fit clearance between internal components, affecting the overall mechanical properties and operational stability of the axle box, and potentially causing serious malfunctions such as component deformation and jamming. This significantly shortens the service life of the axle box and the entire equipment, increases maintenance costs and downtime, and causes numerous inconveniences to production and operation.

[0006] In conclusion, given the significant shortcomings of existing bearing housings in terms of noise control and heat dissipation, there is an urgent need to develop a new type of bearing housing that can effectively reduce noise and has good heat dissipation performance to meet the increasingly demanding requirements of mechanical equipment in various fields. Utility Model Content

[0007] To address the aforementioned problems, this invention presents a low-noise bearing housing.

[0008] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:

[0009] A low-noise bearing housing includes a base, a fixed outer ring is interference-fitted to the inner bottom wall of the base, multiple screw holes are provided on the front and rear end walls of the fixed outer ring, a support seat is provided on the inner wall of the fixed outer ring through multiple connecting seats, a groove is provided on the outer wall of the connecting seat, a fixed inner ring is interference-fitted to the inner wall of the support seat, a liquid inlet pipe is provided on the top wall of the fixed outer ring, and a liquid outlet pipe is provided on the bottom wall of the fixed outer ring.

[0010] It also includes a fixing seat, which is placed on the front and rear sides of the fixing outer ring. The outer wall of the fixing seat has multiple through holes, and bolts are movably installed in the through holes and screw holes. A sealing gasket is provided between the fixing seat and the fixing outer ring. A sealing ring is provided on the inner side wall of the sealing gasket, and multiple slots are provided on the outer wall of the sealing ring.

[0011] Furthermore, the support bases are arranged in a circumferentially spaced pattern on the outer wall of the fixed outer ring.

[0012] Furthermore, the sealing ring is movably embedded between the fixed outer ring and the support base.

[0013] Furthermore, the number of slots is the same as that of the connector, and the outer wall of the connector is inserted into the slot.

[0014] The beneficial effects of this utility model are:

[0015] This invention features an enclosed heat-conducting oil chamber on the outside of the axle box, filled with heat-conducting oil. When the bearing inside the axle box vibrates due to friction between the rollers and raceways, or relative movement between the cage and other components, the heat-conducting oil, with its damping properties, buffers and absorbs the vibration, effectively suppressing its propagation outward. This reduces noise generated by vibration, improves the acoustic environment during equipment operation, reduces potential harm to operators' hearing, and alleviates auditory fatigue.

[0016] The heat transfer oil chamber and circulating heat transfer oil system of this invention can continuously suppress vibration regardless of the wear of the shaft box components, avoiding the continuous increase in noise caused by component aging and increased wear, maintaining a relatively stable and low noise level, and extending the service life of the equipment under low noise conditions.

[0017] The present invention fully considers the convenience of installation in its structural design. The components such as the sealing ring, sealing gasket, and fixing seat are connected by slots, bolts and other means, which makes the operation simple and the connection firm. It is easy for the staff to complete the assembly of the entire heat transfer oil cavity and the connection with the shaft box and heat exchanger by following the corresponding steps. It can be put into use quickly and saves installation time and labor costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the support structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the sealing ring structure of this utility model.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Base, 2. Fixing outer ring, 3. Screw hole, 4. Connecting seat, 5. Support seat, 6. Groove, 7. Fixing inner ring, 8. Liquid inlet pipe, 9. Liquid outlet pipe, 10. Sealing gasket 1, 11. Sealing ring, 12. Slot, 13. Fixing seat, 14. Through hole. Detailed Implementation

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

[0025] See Figure 1-3 As shown, a low-noise bearing housing includes a base 1. A fixed outer ring 2 is interference-fitted to the inner bottom wall of the base 1. Multiple screw holes 3 are provided on the front and rear end walls of the fixed outer ring 2. A support seat 5 is provided on the inner wall of the fixed outer ring 2 through multiple connecting seats 4. A groove 6 is provided on the outer wall of the connecting seat 4. A fixed inner ring 7 is interference-fitted to the inner wall of the support seat 5. One end of the liquid inlet pipe 8 is provided on the top wall of the fixed outer ring 2, and one end of the liquid outlet pipe 9 is provided on the bottom wall of the fixed outer ring 2.

[0026] It also includes a fixing seat 13, which is placed on the front and rear sides of the fixing outer ring 2. The outer wall of the fixing seat 13 has multiple through holes 14. Bolts are movably installed in the through holes 14 and the screw holes 3. A sealing gasket 10 is provided between the fixing seat 13 and the fixing outer ring 2. A sealing ring 11 is provided on the inner side wall of the sealing gasket 10. Multiple slots 12 are provided on the outer wall of the sealing ring 11.

[0027] Furthermore, the support bases 5 are arranged in a circular gap on the outer wall of the fixed outer ring 2.

[0028] Furthermore, the sealing ring 11 is movably embedded between the fixed outer ring 2 and the support seat 5.

[0029] Furthermore, the number of slots 12 is the same as that of connectors 4, and the outer wall of connectors 4 is inserted into the slots 12.

[0030] The detailed connection methods are well-known technologies in the field. All components in this solution are general standard parts or parts known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0031] One specific application of this embodiment is:

[0032] In use, connect the other ends of the inlet pipe 8 and the outlet pipe 9 to the heat exchanger, insert the sealing ring 11 into the cavity [heat transfer oil cavity] between the fixed outer ring 2 and the support seat 5, fit the slot 12 onto the outer wall of the connecting seat 4, seal the heat transfer oil cavity with the sealing gasket 10 and the sealing ring 11, fasten the fixing seat 13 onto the outer wall of the sealing gasket 10, pass the bolt through the through hole 14 and tighten it in the screw hole 3, fix the fixing seat 13, inject the heat transfer oil into the heat transfer oil cavity through the inlet pipe 8, and the groove 6 can cover the entire heat transfer oil cavity, wrapping the internal shaft box and absorbing the temperature generated during bearing operation. The heat transfer oil is discharged through the outlet pipe 9, cooled by the heat exchanger, and then transported back into the heat transfer oil cavity through the inlet pipe 8, realizing the circulation of heat transfer oil and achieving noise reduction and heat dissipation effects.

[0033] Of course, the above description is not intended to limit the present utility model, nor is the present utility model limited to the examples given above. Any changes, alterations, additions or substitutions made by those skilled in the art within the scope of the present utility model should be protected by the present utility model.

Claims

1. A low-noise bearing housing, characterized in that: Including the base (1), The base (1) has an inner bottom wall with an interference fit to a fixed outer ring (2). The front and rear end walls of the fixed outer ring (2) have multiple screw holes (3). The inner wall of the fixed outer ring (2) has a support seat (5) through multiple connecting seats (4). The outer wall of the connecting seat (4) has a groove (6). The inner wall of the support seat (5) has an interference fit to a fixed inner ring (7). The top wall of the fixed outer ring (2) has one end of an inlet pipe (8). The bottom wall of the fixed outer ring (2) has one end of a drain pipe (9). It also includes a fixing seat (13) and is placed on the front and rear sides of the fixing outer ring (2). The outer wall of the fixing seat (13) is provided with multiple through holes (14). Bolts are movably provided in the through holes (14) and the screw holes (3). A sealing gasket (10) is provided between the fixing seat (13) and the fixing outer ring (2). A sealing ring (11) is provided on the inner side wall of the sealing gasket (10). Multiple slots (12) are provided on the outer wall of the sealing ring (11).

2. The low-noise bearing housing according to claim 1, characterized in that: The support base (5) is arranged in a circular gap on the outer wall of the fixed outer ring (2).

3. The low-noise bearing housing according to claim 1, characterized in that: The sealing ring (11) is movably embedded between the fixed outer ring (2) and the support seat (5).

4. A low-noise bearing housing according to claim 1, characterized in that: The number of slots (12) is the same as that of the connector (4), and the outer wall of the connector (4) is inserted into the slot (12).

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