Bearing with oil storage tank

Abstract

The utility model provides a bearing with an oil storage tank, which comprises an inner ring, an outer ring, a plurality of rolling bodies and a retainer, the inner ring is provided with an outer diameter surface, the outer ring is provided with an inner diameter surface, the plurality of rolling bodies are arranged between the outer diameter surface of the inner ring and the inner diameter surface of the outer ring, and the retainer is arranged between the inner ring and the outer ring and used for accommodating and isolating the plurality of rolling bodies. A plurality of pockets are formed in the retainer, each pocket correspondingly accommodates one rolling body, an oil storage groove is formed in each pocket and used for storing a lubricating agent, and the space among the inner ring, the outer ring, the rolling bodies and the retainer is filled with the lubricating agent. According to the design, the lubricant can be stored at the position closer to the contact surface of the rolling body and the raceway, and the lubricant can timely and effectively enter a friction area to form a stable oil film, so that the lubricating effect is improved, the friction resistance is reduced, the abrasion is reduced, the temperature rise is reduced, and the service life of the bearing is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to bearing technical field, especially a bearing with oil tank. BACKGROUND

[0002] Bearing is one of the core components indispensable in contemporary mechanical equipment, its main function is to support rotating shaft or other moving parts, reduce its friction resistance in the movement process, ensure the rotation accuracy and the stability of movement. Ball bearing as a kind of rolling bearing, with ball as rolling element, carries out rolling motion on the raceway of inner ring and outer ring, has the advantages of small friction resistance, sensitive start, high speed, simple structure, low cost, etc., is widely used in various mechanical equipment, for example, motor, machine tool, automobile, aerospace field, etc.

[0003] In order to ensure the normal operation of ball bearing and prolong its service life, lubrication is crucial. Effective lubrication can reduce friction and wear, reduce the temperature rise of bearing, improve its carrying capacity and limit speed. Commonly used lubrication methods mainly include grease lubrication and oil lubrication. Grease lubrication refers to using lubricating grease as lubricant, its advantages are that lubricating grease is not easy to lose and can be used for a long time, suitable for occasions with high sealing requirement and harsh working environment; Oil lubrication refers to using lubricating oil as lubricant, its advantages are good lubrication effect and good heat dissipation performance, suitable for high speed and heavy load occasions.

[0004] However, the existing ball bearing still has some deficiencies in lubrication, mainly in the following aspects:

[0005] Uneven distribution of lubricant: in traditional ball bearings, especially in grease lubricated ball bearings, lubricant is often difficult to distribute uniformly between each rolling element and raceway, which can easily cause local lubrication deficiency, leading to increased friction resistance, excessive temperature rise and even bearing seizure.

[0006] Lubricant loss: under high speed operation or high temperature environment, lubricant is easy to be thrown out or volatilized, which can reduce the lubrication effect and shorten the service life of the bearing.

[0007] Inconvenient lubrication maintenance: some ball bearings have complex structure, which makes lubrication maintenance inconvenient, and regular shutdown for lubricant injection is required, which increases maintenance cost and downtime.

[0008] In view of the above problems, some solutions are proposed in the prior art, such as designing special oil tank, oil hole or oil channel to guide the flow of lubricant to the friction part. Lubricating grease or lubricating oil with better adhesion, high temperature stability and wear resistance can also be developed.

[0009] However, these solutions still have certain limitations, for example, optimizing the bearing structure tends to increase the manufacturing cost and complexity of the bearing, using new type of lubricant costs higher, and using new type of lubrication method requires additional lubrication equipment, increasing the complexity and cost of the system.

[0010] Therefore, there is an urgent need for a new type of ball bearing that can effectively solve the above problems, which can improve the lubrication effect and reduce the cost and facilitate maintenance. Content of the utility model

[0011] The utility model aims at providing a bearing with oil storage groove, which can improve the lubrication effect, reduce the friction resistance and prolong the service life.

[0012] The utility model solves the above technical problem through the following technical scheme:

[0013] A bearing with oil storage groove, comprising an inner ring, an outer ring, a plurality of rolling elements and a retainer, the inner ring has an outer diameter surface, the outer ring has an inner diameter surface, the plurality of rolling elements are arranged between the outer diameter surface of the inner ring and the inner diameter surface of the outer ring, the retainer is arranged between the inner ring and the outer ring and is used for accommodating and isolating the plurality of rolling elements, the retainer is provided with a plurality of pockets, each pocket corresponds to accommodate one rolling element, and each pocket is provided with an oil storage groove inside, which is used for storing lubricant, and the lubricant is filled between the inner ring, the outer ring, the rolling element and the retainer.

[0014] Preferably, the oil storage groove is located on the side wall of the pocket and is located in the gap region between the rolling element and the side wall of the pocket.

[0015] Preferably, the oil storage groove is an arc-shaped groove.

[0016] Preferably, the inner diameter surface of the outer ring is provided with an outer ring raceway, and the two sides of the outer ring raceway are provided with oil guide grooves for guiding the lubricant into the inner ring, the outer ring, the rolling element and the retainer.

[0017] Preferably, the pockets are arranged at equal intervals in the circumferential direction. This design can make the rolling body more uniform in force during the operation of the bearing, thereby reducing the vibration and noise of the bearing, and improving the operation accuracy and stability of the bearing.

[0018] In summary, the utility model discloses a bearing with oil storage groove, which can effectively solve the problems of uneven distribution of lubricant, easy loss and inconvenient maintenance of the existing ball bearing, realize the purposes of improving lubrication effect, reducing friction resistance and prolonging service life, and has good application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic view of the bearing with oil storage groove of an embodiment of the utility model.

[0020] Figure 2 is a partial enlarged view of Figure 1 .

[0021] Figure 3 is a structural schematic view of the pocket of an embodiment of the utility model. DETAILED DESCRIPTION

[0022] The utility model will be more clearly and completely explained below by way of examples and in combination with the drawings.

[0023] Figure 1 is a structural schematic view of the bearing with oil storage groove of an embodiment of the utility model, Figure 2 is a partial enlarged view of Figure 1 , Figure 3 is a structural schematic view of the pocket of an embodiment of the utility model. As shown in Figures 1-3 , as shown in Figure 1 , Figure 2 and Figure 3 , the utility model embodiment discloses a bearing with oil storage groove, which is mainly applied to mechanical equipment that needs long-term lubrication and reduces maintenance. The bearing comprises an outer ring 1, an inner ring 6, a plurality of rolling bodies 5 and a retainer 3.

[0024] The outer ring 1 has an inner diameter surface, and the inner ring 6 has an outer diameter surface. The plurality of rolling bodies 5 are arranged between the outer diameter surface of the inner ring 6 and the inner diameter surface of the outer ring 1, and the shape of the rolling body 5 can be spherical, cylindrical or other suitable rolling shapes.

[0025] The retainer 3 is arranged between the inner ring 6 and the outer ring 1, and is used for accommodating and isolating the plurality of rolling bodies 5, preventing the rolling bodies 5 from contacting and rubbing each other, and guiding the rolling bodies 5 to move along a predetermined track. The material of the retainer 3 can be selected from metal or non-metal materials with wear resistance and low friction coefficient, such as engineering plastics, copper alloy or ceramics.

[0026] The retainer 3 is provided with a plurality of pockets 8, each of which corresponds to accommodate a rolling element 5. The shape of the pocket 8 can be U-shaped, V-shaped, crescent-shaped or other shapes capable of accommodating the rolling element 5.

[0027] The side wall of each pocket 8 is provided with an oil storage groove 7 for storing lubricant. The oil storage groove 7 can ingeniously utilize the gap area between the rolling element 5 and the side wall of the pocket 8, avoiding increasing the volume and weight of the retainer 3. The shape of the oil storage groove 7 can be a simple recess, or can be designed as an arc-shaped groove to increase the storage capacity of the lubricant.

[0028] The lubricant is filled between the inner ring 6, the outer ring 1, the rolling element 5 and the retainer 3 to reduce friction and wear. The type of lubricant can be selected according to the working environment and performance requirements of the bearing, such as lubricating grease or lubricating oil.

[0029] In order to further improve the lubrication effect, the utility model also sets up the oil guide groove 2 on the inner diameter surface of the outer ring 1. The oil guide groove 2 is used to guide the lubricant into the inner ring 6, the outer ring 1, the rolling element 5 and the retainer 3, to ensure that the lubricant can enter the main contact area of the rolling element 5 and the outer ring raceway more directly and effectively. The shape of the oil guide groove 2 can be designed as a straight line, a curve or other shapes as needed, and the inclination angle can be set to 10°-20° to facilitate the flow of lubricant.

[0030] In order to make the rolling element 5 more uniform in force during the operation of the bearing, the utility model equidistantly sets the pocket 8 along the circumferential direction. This arrangement can effectively reduce the vibration and noise of the bearing, improve the running accuracy and stability of the bearing.

[0031] The utility model sets up the oil storage groove 7 in the pocket 8 of the retainer 3, and sets the oil storage groove 7 in the gap area between the rolling element 5 and the side wall of the pocket 8, which can effectively utilize the space in this area to store lubricant, avoid increasing the volume and weight of the retainer 3, and at the same time ensure that the lubricant can effectively enter the friction area between the rolling element 5 and the outer ring raceway, improve the lubrication effect, reduce the friction resistance, reduce the wear, reduce the temperature rise and prolong the service life of the bearing.

[0032] In addition, the utility model also adopts the arc-shaped groove-shaped oil storage groove 7, which can increase the volume of the oil storage groove 7, store more lubricant, and facilitate the flow of lubricant, so that the lubricant can better cover the surface of the rolling element 5 and the outer ring raceway.

[0033] The oil guide groove 2 on the inner diameter surface of the outer ring 1 guides the lubricant into the bearing, further improving the lubrication effect.

[0034] The pockets 8 are arranged equidistantly in the circumferential direction, so that the rolling body 5 is stressed more evenly, the vibration and noise of the bearing are reduced, and the operation precision and stability of the bearing are improved.

[0035] The test results of the bearing with oil storage groove of the embodiment and the existing bearing without oil storage groove are as follows:

[0036]

[0037] From the comparison results, it can be seen that under the same conditions, the temperature rise of the bearing with oil storage groove involved in the embodiment is significantly lower than that of the comparative example.

[0038] In summary, the bearing with oil storage groove has the advantages of effectively solving the problems of uneven distribution of lubricant, easy loss and inconvenient maintenance of the existing ball bearing, improving the lubrication effect, prolonging the service life, and having good application prospect.

[0039] Although the utility model has been described in detail with reference to the foregoing embodiments, for ordinary skilled persons in the art, according to the technical scheme and spirit of the utility model, the foregoing embodiments can be modified or improved in specific implementation, but these modifications or improvements should not deviate from the spirit and scope of the utility model.

Claims

1. A bearing with oil reservoir, characterized in that The bearing comprises an inner ring, an outer ring, a plurality of rolling elements and a retainer. The inner ring has an outer diameter surface. The outer ring has an inner diameter surface. The plurality of rolling elements are arranged between the outer diameter surface of the inner ring and the inner diameter surface of the outer ring. The retainer is arranged between the inner ring and the outer ring for accommodating and isolating the plurality of rolling elements. The retainer is provided with a plurality of pockets, each of which corresponds to accommodate one rolling element. Each pocket is provided with an oil storage groove for storing lubricant. The lubricant is filled between the inner ring, the outer ring, the rolling elements and the retainer.

2. The bearing with oil reservoir of claim 1, wherein, The oil storage groove is located on the side wall of the pocket and in the gap region between the rolling element and the side wall of the pocket.

3. The bearing with oil reservoir of claim 2, wherein, The oil storage groove is an arc-shaped groove.

4. The bearing with oil reservoir of claim 3, wherein, The inner diameter surface of the outer ring is provided with an outer ring raceway. The outer ring raceway is provided with oil guide grooves on both sides. The oil guide grooves are used to guide the lubricant into the inner ring, the outer ring, the rolling elements and the retainer.

5. The bearing with oil reservoir of claim 4, wherein, The pockets are arranged at equal intervals in the circumferential direction.

Images