Retainer of cylindrical roller bearing

Abstract

The utility model discloses a retainer of a cylindrical roller bearing, which is applied to the technical field of mechanical parts, and is characterized in that a hose is embedded in the bearing and is matched with a miniature through hole formed in the surface of a cylindrical roller, so that lubricating oil can be conveyed to an internal hole of the roller along the hose, and multi-angle permeation is realized; a uniform oil film is formed on the contact surface of the roller and the raceway, so that the local dry friction risk is effectively reduced, a hard oil injection channel is prevented from being broken due to vibration, and the long-term running lubrication stability of the bearing is improved; lubricating oil is autonomously driven to seep out evenly through mechanical movement, a pulse type oil injection mode is formed through periodical extrusion of the limiting block and the hose, oil film viscous resistance caused by excessive lubrication can be prevented, lubrication blind areas can be avoided, meanwhile, the hose rebounds automatically after being pressed and deformed, the sealing performance can be maintained, and the risks of lubricating oil leakage and pollutant invasion are reduced.

Description

Technical Field

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

[0002] The cage of a cylindrical roller bearing is a bearing component that partially encloses all or part of the rolling elements and moves with them. It is used to isolate the rolling elements and usually guides and holds them within the bearing. However, in traditional cylindrical roller bearing cages, lubricating oil has difficulty penetrating the densely packed areas of the rollers, which can easily lead to insufficient local lubrication, exacerbating dry friction and wear between the rollers and raceways. Passive penetration may result in uneven distribution of lubricating oil and poor oil film stability, especially under high-speed or high-load conditions, where the risk of failure is even higher. Furthermore, the lubricating oil needs to rely on external passive penetration or intermittent replenishment, which can easily create lubrication blind spots in the densely packed areas of the rollers, leading to increased local dry friction and the risk of raceway scratches. Static oil supply is difficult to adapt to changes in speed or load, and uneven oil film distribution may cause oil film rupture or sudden changes in viscous resistance, affecting the bearing's operational stability. To solve the problems mentioned above, we propose a cage for cylindrical roller bearings. Utility Model Content

[0003] The purpose of this invention is to provide a cage for a cylindrical roller bearing, which has the advantages of automatic lubrication and uniform injection.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a cage for a cylindrical roller bearing, comprising a housing, a cage fixedly sleeved in the middle of the inner wall of the housing, flexible tubes embedded in the front and rear ends of the inner wall of the cage near the middle, through holes opened on opposite sides of the two flexible tubes, an oiling pipe connected to the top of the flexible tubes, and the end of the oiling pipe away from the flexible tube passing through the top of the cage and the center of the top of the front and back of the housing, a cap threadedly connected to the end of the oiling pipe away from the flexible tube, and the surface of the cap being embedded in the center of the top of the front and back of the housing, a baffle welded to the rear end of the front end near the edge of the inner wall of the housing, a rotating mechanism provided at the front and rear ends of the inner wall of the cage away from the middle, and a pressing mechanism provided in the middle of the inner wall of the cage.

[0005] The above technical solution involves opening the cap and adding lubricating oil into the filling pipe. The lubricating oil enters the hose from the filling pipe and is then squeezed out from the through hole of the hose, evenly squeezing it between the balls. A baffle prevents lubricating oil leakage. A hose is embedded in the bearing, and micro-through holes are made on the surface of the cylindrical rollers to allow the lubricating oil to be delivered along the hose to the internal pores of the rollers, achieving multi-angle penetration. This ensures that a uniform oil film is formed on the contact surface between the rollers and the raceway, effectively reducing the risk of local dry friction, preventing the hard oil injection channel from breaking due to vibration, and improving the lubrication stability of the bearing during long-term operation.

[0006] The present invention is further configured such that the extrusion mechanism includes a limiting groove, the limiting groove is located in the middle of the inner wall of the retainer, a limiting block is slidably connected inside the limiting groove, and a pressure rod is rotatably connected to the front and back of the limiting block.

[0007] The above technical solution employs a compression mechanism. When the connector rotates, it drives the limiting block to move along the path of the limiting groove. The movement of the limiting block drives the pressure rod to move, and the movement of the pressure rod compresses the hose, squeezing out the lubricating oil inside the hose. The mechanical motion autonomously drives the lubricating oil to seep out evenly. The periodic compression between the limiting block and the hose forms a pulse-type oil injection mode, which can prevent oil film viscosity resistance caused by excessive lubrication and avoid lubrication blind spots. At the same time, the hose automatically rebounds after being deformed by pressure to maintain sealing and reduce the risk of lubricating oil leakage and contaminant intrusion.

[0008] The present invention is further configured such that the rotating mechanism includes a rotating shaft, the rotating shaft is fixedly sleeved at the front end and rear end of the inner wall of the retainer away from the middle, and the surface of the rotating shaft is rotatably sleeved with balls.

[0009] The above technical solution is adopted as follows: by setting up a rotating mechanism, the rotating part slides and rubs against the ball, the ball is connected to the rotating shaft to rotate, the rotating shaft stabilizes the ball, the cage stabilizes and connects to the rotating shaft, and the outer shell stabilizes the cage.

[0010] The present invention is further configured such that a fixing post is provided at the center of the opposite sides of the two covers, and pull rings are rotatably connected to both sides of the fixing post.

[0011] The above technical solution incorporates a pull ring, which allows for easy opening of the cover to add lubricating oil.

[0012] The present invention is further configured such that the orientation of the through holes is opposite.

[0013] By adopting the above technical solution, the ball bearings at the adjacent ends can be lubricated by setting them to the opposite positions.

[0014] The present invention is further configured such that the opening position of the through hole is located between the two balls.

[0015] By adopting the above technical solution, lubrication can be more uniform by setting the balls between them.

[0016] The present invention is further configured such that the thickness of the hose is thinner than that of the ball bearing.

[0017] By adopting the above technical solution, by setting it to be thinner than the ball bearing, the hose can be prevented from being damaged by friction.

[0018] The present invention is further configured such that the opposite sides of the two lids are concave.

[0019] The above technical solution is adopted: by setting it to be concave, the pull ring can be hidden inside the cover when not in use, and the cover is flush with the outer shell when tightened, preventing damage to the cover and pull ring during operation.

[0020] In summary, this utility model has the following beneficial effects:

[0021] 1. This utility model embeds a hose inside the bearing and opens micro-through holes on the surface of the cylindrical roller, so that the lubricating oil can be delivered to the internal pores of the roller along the hose, achieving multi-angle penetration, ensuring that a uniform oil film is formed on the contact surface between the roller and the raceway, effectively reducing the risk of local dry friction, avoiding the hard oil injection channel from breaking due to vibration, and improving the lubrication stability of the bearing during long-term operation.

[0022] 2. This utility model utilizes mechanical motion to autonomously drive the lubricating oil to seep out evenly. The periodic compression between the limiting block and the hose forms a pulse-type oil injection mode, which can prevent oil film viscosity resistance caused by excessive lubrication and avoid lubrication blind spots. At the same time, the hose can automatically rebound after being deformed by pressure to maintain sealing and reduce the risk of lubricating oil leakage and contaminant intrusion. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a front sectional view of the overall structure of this utility model;

[0025] Figure 3 This is a partial structural front sectional view of the present invention;

[0026] Figure 4 This is a top sectional view of a partial structure of this utility model;

[0027] Figure 5 This is a utility model Figure 2 Enlarged diagram of the structure at point A

[0028] Figure 6 This is a partial structural front view of this utility model.

[0029] Reference numerals in the attached drawings: 1. Outer shell; 2. Oil filling pipe; 3. Limiting groove; 4. Limiting block; 5. Pressure rod; 6. Cover; 7. Pull ring; 8. Rotating shaft; 9. Ball bearing; 10. Cage; 11. Hose; 12. Through hole; 13. Baffle; 14. Fixing post. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings.

[0031] Example 1:

[0032] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 A cage for a cylindrical roller bearing includes a housing 1. A cage 10 is fixedly sleeved in the middle of the inner wall of the housing 1. Flexible tubes 11 are embedded in the front and rear ends of the inner wall of the cage 10 near the middle. Through holes 12 are formed on opposite sides of the two flexible tubes 11. A lubrication pipe 2 is connected to the top of the flexible tubes 11. The end of the lubrication pipe 2 away from the flexible tubes 11 passes through the top of the cage 10 and the center of the top of the front and back sides of the housing 1. A cap 6 is threaded to the end of the lubrication pipe 2 away from the flexible tubes 11, and the surface of the cap 6 is embedded in the center of the top of the front and back sides of the housing 1. The inner wall of the housing 1... A baffle 13 is welded to the rear end of the front end near the edge. A rotating mechanism is provided at the front and rear ends of the inner wall of the retainer 10 away from the middle. A squeezing mechanism is provided in the middle of the inner wall of the retainer 10. Open the cover 6 and add lubricating oil into the filling pipe 2. The lubricating oil enters the hose 11 from the filling pipe 2 and is squeezed out from the through hole 12 of the hose 11, and is evenly squeezed between the balls 9. The baffle 13 prevents the lubricating oil from leaking. The hose 11 is embedded in the bearing and a micro through hole 12 is opened on the surface of the cylindrical roller so that the lubricating oil can be delivered along the hose 11 to the internal pores of the roller to achieve multi-angle penetration.

[0033] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 The rotating mechanism includes a rotating shaft 8, which is fixedly sleeved at the front and rear ends of the inner wall of the retainer 10 away from the middle. A ball bearing 9 is rotatably sleeved on the surface of the rotating shaft 8. By setting the rotating mechanism, the rotating part slides and rubs against the ball bearing 9. The ball bearing 9 rotates by sleeve of the rotating shaft 8. The rotating shaft 8 stabilizes the ball bearing 9. The retainer 10 stabilizes and connects the rotating shaft 8. The outer shell 1 stabilizes the retainer 10.

[0034] refer to Figure 1 , Figure 6 A fixing post 14 is provided at the center of the opposite side of the two covers 6. Pull rings 7 are rotatably connected to both sides of the fixing post 14. By providing pull rings 7, the covers 6 can be easily opened to add lubricating oil.

[0035] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 The through holes 12 are opened in opposite directions. By setting them in opposite positions, the balls 9 on the adjacent end can be lubricated.

[0036] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 The opening position of the through hole 12 is set between the two balls 9. By setting it between the balls 9, the lubrication can be more uniform.

[0037] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 The thickness of the hose 11 is set to be thinner than that of the ball bearing 9. By setting it to be thinner than the ball bearing 9, the hose 11 can be prevented from being damaged by friction.

[0038] refer to Figure 1 , Figure 6 The two covers 6 are concave on opposite sides. By being concave, the pull ring 7 can be hidden inside the cover 6 when not in use. When the cover 6 is tightened, it is flush with the outer shell 1, preventing damage to the cover 6 and pull ring 7 during operation.

[0039] Brief description of usage: When lubricating oil needs to be added, pull the ring 7 to open the cap 6 and add the lubricating oil into the filling pipe 2. The lubricating oil enters the hose 11 from the filling pipe 2 and is then squeezed out from the through hole 12 of the hose 11, evenly squeezing it between the balls 9. The baffle 13 prevents lubricating oil leakage. The hose 11 is embedded in the bearing and micro-through holes 12 are opened on the surface of the cylindrical rollers, so that the lubricating oil can be delivered along the hose 11 to the internal pores of the rollers, achieving multi-angle penetration. This ensures that a uniform oil film is formed on the contact surface between the rollers and the raceway, effectively reducing the risk of local dry friction, preventing the hard oil injection channel from breaking due to vibration, and improving the lubrication stability of the bearing during long-term operation.

[0040] Example 2:

[0041] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 The extrusion mechanism includes a limiting groove 3, which is located in the middle of the inner wall of the retainer 10. A limiting block 4 is slidably connected inside the limiting groove 3. A pressure rod 5 is rotatably connected to the front and back of the limiting block 4. When the connecting part rotates, it drives the limiting block 4 to move along the path of the limiting groove 3. The movement of the limiting block 4 drives the pressure rod 5 to move. When the pressure rod 5 moves, it extrudes the hose 11, squeezing out the lubricating oil inside the hose 11. The lubricating oil is evenly seeped out by autonomously driving the mechanical movement. The periodic extrusion of the limiting block 4 and the hose 11 forms a pulse-type oil injection mode.

[0042] Brief description of the usage process: When the connector rotates, it drives the limiting block 4 to move along the path of the limiting groove 3. The movement of the limiting block 4 drives the pressure rod 5 to move. When the pressure rod 5 moves, it squeezes the hose 11, squeezing out the lubricating oil inside the hose 11. The mechanical movement drives the lubricating oil to seep out evenly. The periodic squeezing of the limiting block 4 and the hose 11 forms a pulse-type oil injection mode, which can prevent the oil film viscosity resistance caused by excessive lubrication and avoid lubrication blind spots. At the same time, the hose 11 automatically rebounds after being deformed by pressure to maintain the seal and reduce the risk of lubricating oil leakage and contaminant intrusion.

[0043] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A cage for a cylindrical roller bearing, comprising a housing (1), characterized in that: A retainer (10) is fixedly sleeved in the middle of the inner wall of the outer shell (1). A hose (11) is embedded in the front and rear ends of the inner wall of the retainer (10) near the middle. A through hole (12) is opened on the opposite side of the two hoses (11). A refueling pipe (2) is connected to the top of the hose (11). The end of the refueling pipe (2) away from the hose (11) passes through the top of the retainer (10) and the center of the top of the front and back of the outer shell (1). A cap (6) is threaded to the end of the refueling pipe (2) away from the hose (11). The surface of the cap (6) is embedded in the center of the top of the front and back of the outer shell (1). A baffle (13) is welded to the rear end of the inner wall of the outer shell (1) near the edge. A rotating mechanism is provided at the front and rear ends of the inner wall of the retainer (10) away from the middle. A squeezing mechanism is provided in the middle of the inner wall of the retainer (10).

2. The cage of a cylindrical roller bearing according to claim 1, characterized in that: The extrusion mechanism includes a limiting groove (3), which is located in the middle of the inner wall of the retainer (10). A limiting block (4) is slidably connected inside the limiting groove (3), and a pressure rod (5) is rotatably connected to the front and back of the limiting block (4).

3. The cage of a cylindrical roller bearing according to claim 1, characterized in that: The rotating mechanism includes a rotating shaft (8), which is fixedly sleeved at the front and rear ends of the inner wall of the retainer (10) away from the middle, and the surface of the rotating shaft (8) is rotatably sleeved with balls (9).

4. The cage of a cylindrical roller bearing according to claim 1, characterized in that: A fixing post (14) is provided at the center of the opposite side of the two covers (6), and pull rings (7) are rotatably connected to both sides of the fixing post (14).

5. The cage of a cylindrical roller bearing according to claim 2, characterized in that: The through holes (12) are oriented in opposite directions.

6. The cage of a cylindrical roller bearing according to claim 1, characterized in that: The opening position of the through hole (12) is set between the two balls (9).

7. The cage of a cylindrical roller bearing according to claim 1, characterized in that: The thickness of the hose (11) is set to be thinner than that of the ball (9).

8. The cage of a cylindrical roller bearing according to claim 1, characterized in that: The opposite sides of the two lids (6) are set to be concave.

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