Cylindrical roller bearing retainer with disc type structure

Abstract

The utility model relates to a bearing retainer product structure, in particular to a cylindrical roller bearing retainer with a disc-type structure, which comprises an annular body which is an integrally formed sheet-type disc; a plurality of retainer beams extending towards the center direction of the retainer are formed along the circumferential inner diameter of the annular body and are uniformly arranged in the annular body; a pocket hole of the retainer is formed between every two adjacent retainer beams; the pockets are in a semi-open type; a special design mode is adopted for the whole retainer, the pocket design is in a mode that the rollers are wrapped by the rollers in the radial direction, and compared with a traditional mode, great breakthrough is achieved; the bearing has the characteristics of light weight and small beam width, the design space utilization rate can be improved, the bearing capacity of the bearing is effectively improved, and meanwhile, the high-rotating-speed performance of the bearing is ensured. The structural design of the retainer changes the situation that a conventional bearing retainer is limited through a rolling body and is limited through the outer ring, and the limiting mode is also remarkably changed.

Description

TECHNICAL FIELD

[0001] The utility model relates to bearing retainer product structure, concretely relates to a disc type structure cylindrical roller bearing retainer belongs to bearing technical field. BACKGROUND

[0002] The conventional cylindrical roller bearing in order to guarantee the retainer strength, the retainer beam width size is generally thick, the space is larger, causes the reduction of the number of rolling element, reduces the bearing carrying capacity, and the ordinary structure's retainer generally relies on the roller to lift and carries out the axial limit through the both ends of the roller, and the full cylindrical roller bearing increases the number of rollers due to the structure without retainer, improves the carrying capacity, but is not applicable to the use condition of high speed, and the work is easy to jam. SUMMARY

[0003] In view of the above problem, the utility model comprehensively considers the bearing load, speed and other working conditions, and provides a disc type structure cylindrical roller bearing retainer, the whole retainer adopts a special design, the pocket hole is designed to hold the roller radially, and the retainer is limited in the form of bearing outer ring, which has great breakthrough compared with the traditional way, and has the characteristics of light weight and small beam width.

[0004] In order to realize the above object, the technical scheme adopted by the utility model is as follows: a disc type structure cylindrical roller bearing retainer, comprising: an annular body, the annular body is an integral piece type disc; a plurality of retainer beams extending to the center direction of the retainer are formed along the circumferential inner diameter of the annular body, and the plurality of retainer beams are evenly arranged in the annular body; the pocket hole of the retainer is formed between each adjacent two retainer beams;

[0005] Further, the pocket hole is in a semi-open form;

[0006] Further, the pocket hole is formed by the side wall of the adjacent two retainer beams, and the contact surface of the pocket hole is matched with the outer surface of the roller, that is, the inner wall surface of the pocket hole;

[0007] Further, the retainer holds the roller in the radial direction of the roller and is located at the middle position of the entire axial length of the roller;

[0008] Further, the center diameter of the circle where the pocket hole is located is matched with the center diameter of the roller;

[0009] The beam width of the retainer depends on the size of the center diameter of the circle where the pocket hole is located; under the condition of the same number of rollers, the larger the diameter of the roller, the larger the center diameter of the circle where the pocket hole is located, and the smaller the beam width of the retainer; the present scheme can increase the number of rollers or increase the diameter of the rolling element by reducing the beam width of the retainer, thereby improving the carrying capacity of the bearing.

[0010] Since the pockets adopt a semi-open form, the end of the retainer beam extending towards the center of the retainer is a free end of the retainer beam;

[0011] Further, the lock of the pocket is formed between the free ends of every two adjacent retainer beams;

[0012] The retainer is limited by the outer ring, and the retainer is applied to a bearing and further comprises two oppositely arranged half outer rings, the two half outer rings are matched together to form a concave groove type outer ring unit, the outer edge of the retainer is clamped and installed in the concave groove of the outer ring raceway, the two end faces of the retainer correspond to the side walls of the concave groove, and the outer diameter surface of the retainer corresponds to the groove bottom;

[0013] Further, the axial gap between the two side walls of the concave groove and the two end faces of the retainer is arranged between the retainer and the outer ring; and the radial gap between the groove bottom of the concave groove and the outer diameter surface of the retainer is arranged between the retainer and the outer ring;

[0014] Further, the radial gap is larger than the axial gap;

[0015] The distance between the two side walls of the concave groove is the groove width of the outer ring, and the groove width of the outer ring is slightly larger than the width of the retainer, so that the rotation is prevented from being affected;

[0016] Further, the outer edge of the retainer is uniformly provided with a plurality of oil holes in the circumferential direction, the plurality of oil holes include the same number of radial lubricating oil holes and axial lubricating oil holes in one-to-one correspondence; the plurality of axial lubricating oil holes are arranged at the positions of the retainer beams on the outer edge of the retainer and penetrate through the two side end faces of the retainer, and the plurality of radial lubricating oil holes are arranged perpendicularly to the axial lubricating oil holes from the outer diameter surface of the retainer and communicate with the axial lubricating oil holes;

[0017] The principle of the above-mentioned lubricating oil holes is that the bearing is installed in the gear box, the gear box cavity is full of lubricating oil, the axial lubricating oil hole is beneficial to the circulation of the lubricating oil on the left and right sides of the retainer, and in addition, the radial lubricating oil hole communicates with the axial oil hole, so that the lubricating oil can enter between the retainer and the concave groove of the outer ring raceway through the radial lubricating oil hole, and the bearing lubrication is more sufficient.

[0018] The disc type structure cylindrical roller bearing retainer has the following advantages:

[0019] The retainer as a whole adopts a special design mode, the pockets are designed in the form of radially holding rollers, and compared with the traditional mode, the retainer has great breakthrough; the retainer has the characteristics of light weight and small beam width, can improve the design space utilization rate, effectively improve the bearing carrying capacity, and ensure the high speed performance of the bearing.

[0020] The cage structure design changes the limiting of the conventional bearing cage through the rolling body, the limiting through the outer ring, and the limiting mode is also changed; the cage is generally used for the cylindrical roller bearing matched with the high-performance gear box. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The utility model discloses a disc type structure cylindrical roller bearing cage structure diagram.

[0022] Figure 2 For Figure 1 The front view section view.

[0023] Figure 3 For the structure diagram of the cage installation roller.

[0024] Figure 4 For Figure 2 The A-A section view of of.

[0025] Figure 5 For Figure 4 The structure diagram of the A place amplification and bearing outer ring assembly of of.

[0026] Figure 6 For Figure 2 The structure diagram of the B place amplification and roller assembly state of of.

[0027] In the drawing, 1, annular body, 1.1, cage beam, 1.1.1, free end of cage beam, 1.2, pocket, 1.2.1, inner wall surface of pocket, 1.3, lock port L2, 2, roller, 3, half outer ring, 4, axial gap, 5, radial gap, B, groove width of outer ring, S, width of cage, 6, radial lubricating oil hole, 7, axial lubricating oil hole. DETAILED DESCRIPTION

[0028] In order to make the above purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiment of the utility model is explained in detail below. In the following description, a lot of specific details are set forth in order to fully understand the utility model. But the utility model can be implemented in many other ways different from the description, and those skilled in the art can make similar improvements without departing from the connotation of the utility model, so the utility model is not limited by the following disclosed specific embodiments.

[0029] As Figures 1-6 Disclosed is a disc type structure cylindrical roller bearing cage, which comprises an annular body, the annular body 1 is a one-piece disc; a plurality of cage beams 1.1 extending to the center of the cage are formed on the inner diameter of the annular body 1 in the circumferential direction, and the plurality of cage beams 1.1 are evenly arranged in the annular body 1; a pocket 1.2 of the cage is formed between every two adjacent cage beams 1.1;

[0030] The pocket 1.2 is in a semi-open form;

[0031] Each of the pockets 1.2 is formed by two adjacent retainer beams 1.1 side walls and the outer surface of the roller 2 cooperates with the contact surface of the inner wall surface 1.2.1 of the pocket;

[0032] During assembly, the roller 2 is loaded into the pocket 1.2 from one side of the retainer, so that the entire inner wall surface 1.2.1 of the pocket contacts the outer diameter surface of the roller 2;

[0033] The retainer pockets the roller 2 in the radial direction of the roller 2 and is located in the middle of the entire axial length of the roller 2;

[0034] The center diameter of the circle where the pocket 1.2 is located matches the center diameter of the roller 2;

[0035] The beam width of the retainer depends on the size of the center diameter of the circle where the pocket 1.2 is located; under the condition of the same number of rollers 2, the larger the diameter of the roller 2, the larger the center diameter of the circle where the pocket 1.2 is located, and the smaller the beam width of the retainer; the present scheme can increase the number of rollers 2 or increase the diameter of the roller by reducing the beam width of the retainer, thereby improving the load capacity of the bearing.

[0036] Since the pocket 1.2 is in a semi-open form, the end of the retainer beam 1.1 extending to the center of the retainer is a free end 1.1.1 of the retainer beam;

[0037] The free ends 1.1.1 of each two adjacent retainer beams form a lock 1.3 of the pocket 1.2, which prevents the roller 2 from falling out of the pocket 1.2 and plays a role of locking the roller 2; the distance of the lock 1.3 is determined by reasonable calculation.

[0038] Specifically, the distance L2 of the lock 1.3 in the embodiment is generally smaller than the diameter of the rolling body by about 1mm, and the lock amount is not fixed and is designed differently according to the base body.

[0039] The retainer with the above structure is limited by the outer ring, and the retainer applied in the bearing further comprises two oppositely arranged half outer rings 3, the two half outer rings 3 are matched together to form a concave groove type outer ring unit, the outer edge of the retainer is clamped and installed in the concave groove of the outer ring unit, the two end surfaces of the retainer correspond to the side walls of the concave groove, and the outer diameter surface of the retainer corresponds to the groove bottom of the concave groove;

[0040] The two side walls of the concave groove and the two end surfaces of the retainer are provided with an axial gap 4 between the retainer and the outer ring; the groove bottom and the outer diameter surface of the retainer are provided with a radial gap 5 between the retainer and the outer ring;

[0041] The radial gap 5 is larger than the axial gap 4, preventing the retainer from wearing during operation;

[0042] Specifically, the axial gap is about 0.2-0.4mm, and the radial gap is about 0.7-1.0mm, and the gap is slightly different according to the change of bearing size.

[0043] The distance between the two side walls of the groove is the groove width B of the outer ring, and the groove width B of the outer ring is slightly larger than the width S of the retainer, preventing the rotation from being affected.

[0044] The principle of setting the above lubricating oil hole is that the bearing is installed in the gear box, and the cavity of the gear box is full of lubricating oil, and the axial lubricating oil hole is beneficial to the circulation of the lubricating oil on the left and right sides of the retainer.

[0045] Through the above-mentioned locking port 1.3 design, the roller 2 is loaded into the pocket 1.2, so that the bearing outer ring, the roller 2 and the retainer form a component, preventing the roller 2 from falling from the inner diameter direction during installation.

[0046] The outer edge of the retainer is uniformly provided with a plurality of oil holes in the circumferential direction, and the plurality of oil holes include the same number of radial lubricating oil holes 6 and axial lubricating oil holes 7.

[0047] The utility model discloses a bearing load, rotation speed and other working conditions are comprehensively considered, and a disc type structure cylindrical roller bearing retainer with lighter weight and smaller beam width is designed, which can effectively improve the bearing capacity of the bearing.

[0048] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0049] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0050] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0051] In the utility model, unless otherwise specifically defined and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

Claims

1. A disc-type cylindrical roller bearing cage, characterized in that, include: The annular body is an integrally formed plate-shaped disk; a plurality of retainer beams extending toward the center of the retainer are formed along the circumferential inner diameter of the annular body, and the plurality of retainer beams are evenly arranged in the annular body; a retainer pocket is formed between each pair of adjacent retainer beams. The pocket is in a semi-open form; Each pocket is formed by two adjacent cage beam sidewalls, creating a contact surface that mates with the outer surface of the roller, i.e., the inner wall surface of the pocket. The center diameter of the circle containing the pocket matches the center diameter of the roller's rotation. The end of the cage beam extending toward the center of the cage is the free end of the cage beam; a pocket is formed between each pair of adjacent free ends of the cage beam.

2. The disc-type cylindrical roller bearing cage according to claim 1, characterized in that: The cage holds the roller in the radial direction and is located at the midpoint of the roller's entire axial length.

3. A disc-type cylindrical roller bearing, comprising the cage as described in claim 1 or 2, characterized in that: The cage is limited by an outer ring, which consists of two opposing semi-outer rings that fit together to form a complete groove-type outer ring. The outer diameter edge of the cage is clamped and installed in the groove of the outer ring raceway, so that the two end faces of the cage correspond to the sidewalls of the groove, and the outer diameter surface of the cage corresponds to the bottom of the groove.

4. A disc-type cylindrical roller bearing according to claim 3, characterized in that: An axial clearance is provided between the two side walls of the groove and the two end faces of the cage; a radial clearance is provided between the bottom of the groove and the outer diameter surface of the cage.

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