Thrust needle roller cage with high load capacity

Abstract

The utility model discloses a thrust needle cage with high bearing capacity, which comprises a frame body, the frame body is arranged in a circular ring shape, a plurality of long grooves are evenly distributed along the radial direction of the frame body on the frame body, a cylindrical roller is arranged in the long groove, a pocket hole is arranged between the adjacent long grooves of the frame body, a ball is arranged in the pocket hole, and the pocket hole is arranged close to the edge of the frame body. The structure is simple, the layout is reasonable, the bearing capacity of the structure is effectively increased, and good use effect is achieved.

Description

Technical Field

[0001] This utility model relates to a thrust needle roller cage with high load-bearing capacity. Background Technology

[0002] In fields such as mechanical transmission, automotive manufacturing, and construction machinery, thrust needle roller bearings are widely used in applications requiring axial loads due to their compact structure and small radial dimensions. As industrial equipment evolves towards higher power and lighter weight, higher demands are placed on the axial load capacity of thrust needle roller bearings. Traditional thrust needle roller bearings typically consist of a cage and needle rollers, transmitting loads solely through line contact between the needle rollers and the contact surface. Limited installation space restricts the optimization of the number and size of the needle rollers, leading to a bottleneck in improving their load-bearing capacity. Some improvement solutions attempt to increase the needle roller density or diameter, but these often sacrifice the bearing's rotational flexibility or fail to adapt to existing installation spaces due to structural interference, making it difficult to balance load-bearing performance and ease of use. Currently, there is still a lack of a thrust needle roller bearing structure that can effectively improve axial load capacity within limited space without affecting the smooth operation of the bearing, thus failing to meet the demands of high-load conditions. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a thrust needle roller cage with high load-bearing capacity. It has a simple structure, reasonable layout, effectively increases the load-bearing capacity of the structure, and has good performance.

[0004] To achieve the above objectives, this utility model provides a thrust needle roller retainer with high load-bearing capacity, comprising a frame body arranged in a circular shape, a plurality of long grooves evenly distributed along the radial direction of the frame body, cylindrical rollers disposed in the long grooves, pockets disposed between adjacent long grooves, ball bearings disposed in the pockets, and the pockets being disposed near the edge of the frame body.

[0005] The beneficial effects of this design are as follows: This configuration allows the cylindrical rollers and balls to form a collaborative load-bearing system, achieving a composite force-bearing mode of line contact and point contact within a limited radial space. This significantly increases the upper limit of axial load capacity, disperses local load pressure, avoids stress concentration, and extends the service life of the frame and rolling elements. The pockets are located close to the edge of the frame, fully utilizing the edge moment advantage of the ring structure to optimize load distribution efficiency. Under the same size, the load-bearing capacity is significantly improved, adapting to the heavy-load requirements of high-power equipment. At the same time, the cylindrical rollers ensure load transmission stability, while the balls reduce contact friction resistance, balancing load-bearing performance and smooth operation, reducing equipment energy consumption and accuracy degradation, and improving overall operating accuracy. Its overall structure is compact and reasonable, achieving load-bearing upgrades without expanding the radial installation space. It adapts to the installation requirements of existing mechanical transmission, automotive parts, and other scenarios without modifying the original assembly structure of the equipment, making it highly versatile.

[0006] As a further feature of this utility model, an oil guide groove is provided between adjacent long grooves on the frame. The oil guide groove is arranged radially along the frame and is connected to the pocket. Oil guide arms are provided on both sides of the oil guide groove and are connected to the long groove.

[0007] The advantages of this design are as follows: With the oil guide groove arranged radially along the cage and connected to the pocket, and the oil guide arm further connecting to the long groove, a fully continuous lubrication channel is formed. This allows for rapid delivery of lubricating oil to the contact areas of the balls and cylindrical rollers, achieving comprehensive lubrication of the rolling elements and contact surfaces, significantly reducing friction loss. Simultaneously, the circulating lubricating oil within the channel efficiently removes heat generated during operation, preventing component deformation or lubrication failure caused by localized high temperatures. The uniform oil supply design also prevents wear due to insufficient oil in single areas, further extending the service life of the cage and rolling elements. Furthermore, this lubrication structure does not occupy additional installation space, is highly compatible with existing compact layouts, and ensures stable and long-term operation of the bearing under high load conditions.

[0008] As a further feature of this invention, the oil guide arms on both sides of the oil guide groove are arranged in parallel.

[0009] The beneficial effects of this design are as follows: With the oil guide arms on both sides of the oil guide groove arranged parallel to each other, eddy currents or flow obstruction are avoided. This allows the lubricating oil to flow smoothly along the arms without stagnation, quickly and adequately delivering it to all lubrication points in the groove and pocket. Smooth flow not only ensures complete lubrication of the cylindrical rollers and balls, significantly reducing contact friction, but also efficiently dissipates heat, preventing lubrication failure caused by localized oil shortages or heat buildup. This further ensures stable bearing operation under high load conditions without adding additional structural resistance.

[0010] As a further feature of this invention, the oil guide groove is provided with a through hole.

[0011] The advantages of this design are as follows: The through-holes in the oil guide groove create a continuous lubrication circuit, allowing excess lubricating oil to quickly flow back or penetrate into deeper contact areas, preventing oil accumulation in the groove and thus reducing lubrication efficiency. It also aids in heat dissipation and balances pressure within the groove. This design further optimizes the flow and cleanliness of the lubrication system, ensuring continuous and effective lubrication of the balls and rollers, improving the bearing's operational stability under high loads, and maintaining structural compactness.

[0012] As a further feature of this invention, a guide groove is provided between adjacent pockets.

[0013] The beneficial effects of this design are as follows: The through-channels between adjacent pockets create an interconnected oil circulation network, breaking the isolation of individual pockets and allowing the oil to flow freely and circulate efficiently. This ensures that the balls in each pocket receive a continuous supply of fresh lubricating oil, preventing localized dryness due to lack of oil, and quickly removes impurities and heat from each lubrication point, preventing oil aging or channel blockage. Smoothly circulating oil further optimizes lubrication, reduces wear, ensures stable bearing operation under high loads, and does not require additional installation space. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 This is a top view of an embodiment of the present utility model. Detailed Implementation

[0015] This utility model provides an embodiment of a thrust needle roller cage with high load-bearing capacity, such as... Figures 1 to 2 As shown, it includes a frame 1, which is arranged in a circular shape. Several long grooves are evenly distributed along the radial direction of the frame 1. Cylindrical rollers 2 are arranged in the long grooves. The frame 1 has pockets between adjacent long grooves, and ball bearings 3 are arranged in the pockets. The pockets are located near the edge of the frame 1. The beneficial effects of this design are as follows: This design enables the cylindrical rollers 2 and the balls 3 to form a collaborative load-bearing system, achieving a composite force-bearing mode of line contact and point contact within a limited radial space. This significantly increases the upper limit of axial load-bearing capacity, disperses local load pressure, avoids stress concentration, and extends the service life of the frame 1 and the rolling elements. The pockets are located close to the edge of the frame 1, fully utilizing the edge moment advantage of the ring structure to optimize load distribution efficiency. Under the same size, the load-bearing capacity is significantly improved, adapting to the heavy-load requirements of high-power equipment. At the same time, the cylindrical rollers 2 ensure the stability of load transmission, while the balls 3 reduce contact friction resistance, balancing load-bearing performance and smooth operation, reducing equipment energy consumption and accuracy attenuation, and improving overall operating accuracy. Its overall structure is compact and reasonable, achieving load-bearing upgrades without expanding the radial installation space. It adapts to the installation requirements of existing mechanical transmission, automotive parts, and other scenarios, without requiring modifications to the original assembly structure of the equipment, making it highly versatile.

[0016] As a further feature of this embodiment, an oil guide groove 4 is provided on the frame 1 between adjacent long grooves. The oil guide groove 4 is arranged radially along the frame 1 and is connected to the pocket. Oil guide arms 41 are respectively provided on both sides of the oil guide groove 4 and are connected to the long groove. The beneficial effects of this arrangement are: with the oil guide groove 4 arranged radially along the frame 1 and connected to the pocket, and the oil guide arms 41 further connecting to the long groove, a fully continuous lubrication channel is formed, which can quickly deliver lubricating oil to the contact area of ​​the balls 3 and cylindrical rollers 2, achieving comprehensive lubrication of the rolling elements and contact surfaces, and significantly reducing friction loss. Simultaneously, the lubricating oil circulates within the channel, efficiently carrying away the heat generated during operation and preventing component deformation or lubrication failure caused by localized high temperatures. The uniform oil supply design also prevents wear due to insufficient oil in a single area, further extending the service life of the cage and rolling elements. Furthermore, this lubrication structure does not occupy additional installation space, is highly adaptable to the existing compact layout, and ensures stable and long-term operation of the bearing under high load conditions.

[0017] As a further feature of this embodiment, the oil guide arms 41 on both sides of the oil guide groove 4 are arranged in parallel. The advantages of this arrangement are: This parallel arrangement of the oil guide arms 41 on both sides of the oil guide groove 4 avoids the generation of eddies or flow obstruction, allowing the lubricating oil to flow smoothly along the arms without stagnation, quickly and adequately delivering it to each lubrication point in the groove and pocket. Smooth flow not only ensures full wetting of the cylindrical rollers 2 and the balls 3, significantly reducing contact friction, but also efficiently dissipates heat, preventing lubrication failure caused by localized oil shortages or heat accumulation, further ensuring stable operation of the bearing under high load conditions without adding additional structural resistance.

[0018] As a further feature of this embodiment, the oil guide groove 4 is provided with through holes 42. The beneficial effects of this design are: the through holes 42 in the oil guide groove 4 form a continuous lubrication circuit, allowing excess lubricating oil to quickly flow back or penetrate to deeper contact areas, preventing oil accumulation in the oil guide groove 4 and thus avoiding a decrease in lubrication efficiency. It also assists in heat dissipation and balances the pressure within the groove. This design further optimizes the flow and cleanliness of the lubrication system, ensuring continuous and effective lubrication of the balls 3 and rollers, improving the bearing's operational stability under high loads, and without compromising structural compactness.

[0019] As a further feature of this embodiment, a guide groove 5 is provided between adjacent pockets. The beneficial effect of this design is that the guide groove 5 between adjacent pockets creates an interconnected oil circulation network, breaking the isolated state of oil in individual pockets and allowing the oil to flow freely and circulate efficiently. This ensures that the ball bearings 3 in each pocket continuously receive a supply of fresh lubricating oil, preventing localized dryness due to lack of oil, and also quickly removes impurities and heat from each lubrication point, preventing oil aging or channel blockage. Smoothly circulating oil further optimizes lubrication, reduces wear, ensures stable operation of the bearing under high loads, and does not require additional installation space.

[0020] The above examples are merely one preferred embodiment of this utility model. Ordinary variations and substitutions made by those skilled in the art within the scope of this utility model's technical solution are all included within the protection scope of this utility model.

Claims

1. A thrust needle roller cage with high load-bearing capacity, characterized in that: The device includes a frame, which is arranged in a circular shape. Several long grooves are evenly distributed along the radial direction of the frame. Cylindrical rollers are arranged in the long grooves. The frame has pockets between adjacent long grooves, and ball bearings are arranged in the pockets. The pockets are located near the edge of the frame.

2. The thrust needle roller cage with high load-bearing capacity according to claim 1, characterized in that: An oil guide groove is also provided on the frame between adjacent long grooves. The oil guide groove is arranged radially along the frame and is connected to the pocket. An oil guide support arm is provided on both sides of the oil guide groove and is connected to the long groove.

3. The thrust needle roller cage with high load-bearing capacity according to claim 2, characterized in that: The oil guide arms on both sides of the oil guide groove are arranged in parallel.

4. The thrust needle roller cage with high load-bearing capacity according to claim 2, characterized in that: The oil guide groove is provided with a through hole.

5. The thrust needle roller cage with high load-bearing capacity according to claim 1, characterized in that: A guide groove is provided between adjacent pockets.

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