Cylindrical roller bearing cage

Abstract

The utility model discloses a cylindrical roller bearing retainer, including the frame body, the frame body includes a plurality of beam bodies, and the beam body between adjacent formation has a plurality of for the outside rolling body and holds the pocket, and a plurality of pocket ring direction is evenly distributed on the frame body, and its characterized in that: the beam body both sides outer wall all along the frame body width direction is set up and has the lock station, and the lock station is opposite symmetry and has two for with the outside rolling body outer wall and carries out the point contact lock point bump, and the lock point bump is in the corresponding pocket and is close to the frame body axle core position setting, and the beam body is set up and is used to reach the storage structure of the weight reduction effect and stores the outside redundant lubricating oil, the utility model solves the retainer of the existing cylindrical roller bearing and is easy to appear the problem that the roller shifts and falls off, and the overall weight is big, and lubricating oil storage and supply effect is not good.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, specifically to a cylindrical roller bearing cage. Background Technology

[0002] Cylindrical roller bearings are widely used in heavy-duty, high-speed applications such as speed reducers, motors, wind power, and construction machinery. The bearing cage, as its core component, primarily functions to separate and guide the cylindrical rollers, ensuring their even distribution and operation. Currently, most conventional cylindrical roller bearing cages are integral cage structures, with the pockets relying solely on the side walls to simply limit the rollers. During operation, the rollers are prone to radial and axial movement, and at high speeds, this can easily lead to roller loosening and uneven wear, thus exacerbating bearing vibration and noise, and significantly shortening bearing life. Furthermore, the large proportion of the traditional cage's solid structure results in high weight and high inertia, which is detrimental to high-speed start-stop and energy-efficient operation. Moreover, existing cages lack a dedicated grease storage structure; lubricating grease can only be filled once during assembly, leading to easy grease loss and insufficient continuous lubrication between the rollers and raceways. This results in dry friction, excessive temperature rise, and accelerated wear during long-term operation, failing to meet the requirements for stable operation and long-term lubrication of cylindrical roller bearings under heavy-duty, high-speed, and long-life conditions. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a cylindrical roller bearing cage, which solves the problems of existing cylindrical roller bearing cages being prone to roller slippage and detachment, excessive overall weight, and poor lubricant storage and supply.

[0004] To achieve the above objectives, this utility model provides a cylindrical roller bearing cage, including a frame body, the frame body comprising a plurality of beams, and a plurality of pockets for accommodating external rolling elements formed between adjacent beams, the plurality of pockets being evenly distributed circumferentially on the frame body. The characteristic feature is that: locking platforms are provided on the outer walls of both sides of the beams along the width direction of the frame body, and two symmetrically protruding locking protrusions are provided on the locking platforms for point contact with the outer peripheral wall of the external rolling elements. The locking protrusions are located in the corresponding pockets and are positioned close to the axis of the frame body. A storage structure is provided on the beams for weight reduction and for storing excess external lubricating grease.

[0005] The advantages of adopting the above technical solution are as follows: In the above technology, the two symmetrically raised locking point protrusions on the locking plate make point contact with the outer peripheral wall of the rolling element, which can not only accurately limit the radial displacement of the rolling element and prevent the rolling element from loosening or uneven wear, but also reduce the contact area, reduce operating friction and wear, and reduce bearing vibration and noise. Moreover, the locking point protrusions are located in the pocket and close to the axis of the cage. Compared with the traditional locking plate which is located close to the outer peripheral wall of the cage, the position arrangement of the above structure can optimize the force distribution and improve the locking stability, thereby ensuring the uniform arrangement and operation of the rolling elements. The storage structure on the beam can effectively reduce the overall weight of the cage, reduce the operating inertia, facilitate the high-speed start-stop and energy-saving operation of the bearing, and at the same time store excess lubricating grease, realize the long-term storage and continuous supply of lubricating grease, avoid dry friction, and thus extend the service life of the bearing, adapting to the needs of heavy-load and high-speed working conditions.

[0006] The present invention is further provided that the protrusion of the locking point protrusion is oriented away from the axis of the frame.

[0007] The advantages of adopting the above technical solution are: the protrusion of the locking point protrusion is set away from the axis of the frame, which makes the contact position between the locking point protrusion and the outer peripheral wall of the rolling element more closely match the curvature of the rolling element, improves contact stability, enhances locking effect, and effectively prevents the rolling element from shifting or moving within the pocket; at the same time, it can optimize the stress state of the locking point protrusion, avoid damage to the locking point protrusion due to stress concentration, and extend the service life of the locking point protrusion.

[0008] The present invention further includes the following: the storage structure includes an oil storage tank opened on the top wall of the beam, the oil storage tank being opened in the direction of the frame axis, and the opening of the oil storage tank being located on the top wall of the beam and forming an oil inlet.

[0009] The advantages of adopting the above technical solution are: the storage structure in the above technology adopts an oil storage tank opened on the top wall of the beam, which has a simple structural design, is easy to process, and can effectively reduce production difficulty and cost. Moreover, the oil inlet formed by the opening of the oil storage tank makes it easy to replenish lubricating grease during assembly, and can also receive excess grease that flows back during operation, realizing the recycling of grease. The setting of the above oil storage tank can not only achieve the effect of weight reduction and reduce the inertia of cage operation, but also continuously supply lubricating grease to rolling elements and raceways, improve the lubrication effect, and reduce wear.

[0010] The present invention further includes: an oil replenishment groove is provided on the top wall of the beam, one end of the oil replenishment groove is connected to the oil inlet, and the other end is connected to the adjacent pocket, and the bottom wall of the oil replenishment groove is connected to the oil inlet and the outer wall of the beam in a smooth arc.

[0011] The advantages of adopting the above technical solution are as follows: In the above technology, one end of the oil replenishment groove is connected to the oil inlet and the other end is connected to the adjacent pocket, which can construct a lubricating grease delivery channel, so that the grease in the oil reservoir can be accurately delivered to the surface of the rolling element in the pocket, achieving precise lubrication; and the smooth arc connection between the bottom wall of the oil replenishment groove and the oil inlet and the outer wall of the beam can reduce the resistance to grease flow, facilitate the smooth flow of grease, avoid grease accumulation at the connection, and at the same time avoid stress concentration caused by structural corners, improve the structural strength of the beam, and prevent cracking and damage at the edge of the oil replenishment groove.

[0012] The present invention further includes the following: the top wall of the frame and the outer wall of the frame are connected by a smooth curved surface and a drainage slope is formed to guide external lubricating grease into the pocket.

[0013] The advantages of adopting the above technical solution are: the smooth curved surface connection between the top wall and the outer wall of the frame can reduce structural stress concentration, improve the overall structural strength and stability of the frame, avoid damage to the frame due to stress concentration during operation, and the formed drainage slope can guide the externally replenished lubricating grease and the return of excess grease. The excess lubricating grease above the cage can flow smoothly into the pocket below the bottom wall of the cage through the drainage slope on the cage, providing continuous lubrication for the rolling elements and avoiding grease waste. At the same time, the smooth curved surface can reduce airflow resistance during bearing operation, reduce operating noise and energy loss, and optimize bearing operating performance.

[0014] The present invention is further provided that the locking platform and the locking point protrusion are integrally formed.

[0015] The advantages of adopting the above technical solution are: the integrated molding of the locking platform and the locking point protrusion can simplify the processing steps, reduce the assembly steps, reduce production and assembly costs, and improve production efficiency. The integrated molding structure can eliminate the connection gap between the locking platform and the locking point protrusion, avoid problems such as loosening or falling off during operation, and improve the connection stability and structural integrity of the two. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of the present invention. Detailed Implementation

[0017] This utility model provides a cylindrical roller bearing cage, including a cage body 1. The cage body 1 includes several beams 11, and several pockets 12 for accommodating external rolling elements are formed between adjacent beams 11. The pockets 12 are evenly distributed circumferentially on the cage body 1. Locking platforms 2 are provided on the outer walls of both sides of the beams 11 along the width direction of the cage body 1. Each locking platform 2 has two symmetrically protruding locking protrusions 21 for point contact with the outer peripheral wall of the external rolling elements. The locking protrusions 21 are located in the corresponding pockets 12 and are positioned close to the axis of the cage body 1. The beams 11 have storage structures for weight reduction and for storing excess external lubricating grease. The protrusions of the locking protrusions 21 face towards... The storage structure, located away from the axis of the frame 1, includes an oil storage tank 3 on the top wall of the beam 11. The oil storage tank 3 is oriented towards the axis of the frame 1. The opening of the oil storage tank 3 is located on the top wall of the beam 11 and forms an oil inlet. The top wall of the beam 11 has an oil replenishment groove 31. One end of the oil replenishment groove 31 is connected to the oil inlet, and the other end is connected to the adjacent pocket 12. The bottom wall of the oil replenishment groove 31 is connected to the oil inlet and the outer wall of the beam 11 with a smooth arc surface. The top wall of the frame 1 and the outer wall of the frame 1 are connected with a smooth curved surface and form a drainage slope 13 for guiding external lubricating grease into the pocket 12. The locking platform 2 and the locking point protrusion 21 are integrally formed.

[0018] In the aforementioned technology, when the bearing is in operation, the rolling elements are placed in the pockets formed by the adjacent beams of the cage. The two symmetrically protruding locking protrusions on the locking platform make point contact with the outer peripheral wall of the rolling elements. The locking protrusions are located in the pockets and close to the axis of the cage, with the protrusions facing away from the axis of the cage. This can precisely limit the radial displacement of the rolling elements, preventing them from loosening, wearing unevenly, or shifting during high-speed operation. At the same time, the integral structure of the locking platform and the locking protrusions ensures the structural stability of the locking part, ensuring a continuous and reliable locking effect. This achieves stable positioning of the rolling elements in the pockets, guiding the rolling elements to rotate synchronously and uniformly with the cage. Combined with the lubrication guarantee provided by the storage structure and the drainage structure, the smoothness of the locking process is further improved, preventing the overall operating performance of the bearing from being affected by locking failure.

[0019] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A cylindrical roller bearing cage, comprising a frame body, the frame body including a plurality of beams, wherein a plurality of pockets for accommodating external rolling elements are formed between adjacent beams, the plurality of pockets being circumferentially distributed on the frame body, characterized in that: Locking platforms are provided on both outer walls of the beam along the width of the frame. Two locking protrusions are symmetrically raised on the locking platforms for point contact with the outer peripheral wall of the external rolling body. The locking protrusions are located in corresponding pockets and are positioned close to the axis of the frame. The beam is provided with a storage structure for weight reduction and storage of excess external lubricating grease.

2. The cylindrical roller bearing cage according to claim 1, characterized in that: The protrusions of the locking point are oriented away from the axis of the frame.

3. A cylindrical roller bearing cage according to claim 1, characterized in that: The storage structure includes an oil storage tank opened on the top wall of the beam. The oil storage tank is opened in the direction of the frame axis, and the opening of the oil storage tank is located on the top wall of the beam and forms an oil inlet.

4. A cylindrical roller bearing cage according to claim 1, characterized in that: The top wall of the beam is provided with an oil replenishment groove. One end of the oil replenishment groove is connected to the oil inlet, and the other end is connected to the adjacent pocket. The bottom wall of the oil replenishment groove is connected to the oil inlet and the outer wall of the beam in a smooth arc.

5. A cylindrical roller bearing cage according to claim 1, characterized in that: The top wall of the frame is connected to the outer wall of the frame by a smooth curved surface and has a drainage slope for guiding external lubricating grease into the pocket.

6. A cylindrical roller bearing cage according to claim 1, characterized in that: The locking platform and the locking point protrusion are integrally formed.

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