Reinforced ball bearing for heavy mine truck

Abstract

The reinforced ball bearing for the heavy mine truck relates to the technical field of ball bearings and comprises an inner ring shell and an outer ring shell, a plurality of balls are arranged between the inner ring shell and the outer ring shell in a rolling mode, an outer oil cavity is formed in the outer ring shell, and a plurality of flow guide channels are formed in the inner wall of the outer oil cavity. An outer oil hole is formed in the end, away from the outer oil cavity, of the flow guide channel and penetrates through the inner wall of the outer ring shell, the inner diameter of the flow guide channel is larger than that of the outer oil hole, a flow guide plug is movably arranged in the flow guide channel, a gap exists between the side wall of the flow guide plug and the inner wall of the flow guide channel, and the flow guide plug is used for sealing the outer oil hole. A linkage assembly is arranged on the flow guide plug and used for enabling the flow guide plug to slide in the flow guide hole. The ball bearing lubricating device has the effects that the ball bearing can be conveniently lubricated, and equipment shutdown for ball bearing maintenance is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of ball bearings, in particular to a reinforced ball bearing for heavy mining trucks. Background Art

[0002] A mining truck is a dump truck used to carry and transport ore. When fully loaded, the mining truck carries a large weight. To ensure the normal operation of the mining truck, ball bearings are installed in the mining truck to ensure that the various accessories can rotate relative to each other when subjected to force.

[0003] In the related art, a Chinese patent with authorization announcement number CN214367250U provides a deep groove ball bearing, which includes an inner ring and an outer ring, which are coaxially arranged, and the outer wall of the inner ring and the inner wall of the outer ring enclose a raceway, a cage is arranged in the raceway, and multiple rollers are evenly arranged in the cage, and the rollers roll in the raceway through the cage. The rollers roll in the raceway, reducing the friction between the inner ring and the outer ring, and facilitating the relative rotation of the inner ring and the outer ring.

[0004] In the process of implementing this application, the inventors found that there are at least the following problems in this technology: when the ball bearing runs quickly, the friction between the roller and the raceway will increase. After the ball bearing has been used for a period of time, the mining truck needs to be stopped and lubricating oil needs to be injected into the ball bearing for maintenance, which reduces the working efficiency of the mining truck. Utility Model Content

[0005] In order to facilitate the lubrication of ball bearings and reduce the need for equipment shutdown to maintain ball bearings, the present application provides a reinforced ball bearing for heavy-duty mining trucks.

[0006] The reinforced ball bearing for heavy mining trucks provided in this application adopts the following technical solution:

[0007] A reinforced ball bearing for a heavy-duty mining truck comprises an inner ring shell and an outer ring shell, a plurality of balls are arranged for rolling between the inner ring shell and the outer ring shell, an outer oil cavity is arranged inside the outer ring shell, a plurality of guide channels are arranged on the inner wall of the outer oil cavity, an outer oil hole is arranged at one end of the guide channel away from the outer oil cavity, the outer oil hole penetrates the inner wall of the outer ring shell, the inner diameter of the guide channel is larger than the inner diameter of the outer oil hole, a guide plug is movably arranged in the guide channel, a gap exists between the side wall of the guide plug and the inner wall of the guide channel, the guide plug is used for closing the outer oil hole, a linkage assembly is arranged on the guide plug, and the linkage assembly is used for making the guide plug slide in the guide hole.

[0008] By adopting the above technical solution, when the ball rolls relatively between the inner ring shell and the outer ring shell, the ball drives the linkage assembly to move, and the linkage assembly causes the guide plug to slide in the guide hole. When the guide plug exposes the outer oil hole, the lubricating oil in the outer oil cavity enters the outer oil hole through the guide channel. The lubricating oil in the outer oil hole is coated on the ball, reducing the friction on the surface of the ball, thereby achieving the effect of lubricating the ball bearing. At the same time, the equipment does not need to be shut down for lubrication of the ball bearing, thereby reducing the need for equipment shutdown to maintain the ball bearing.

[0009] Preferably, the linkage assembly includes a linkage spring and a linkage roller, one end of the linkage spring is fixedly connected to the inner wall of the outer oil chamber, the other end of the linkage spring is fixedly connected to the end of the guide plug away from the outer oil hole, the other end of the guide plug is rotatably connected to the linkage roller, the other end of the linkage roller away from the guide plug protrudes from the outer oil hole, and the linkage roller is used to contact the ball.

[0010] By adopting the above technical solution, during the rolling process of the ball, the ball rotates, and at the same time, the ball and the outer ring shell move relative to each other. During the relative movement of the ball and the outer ring shell, the ball pushes the linkage roller to move in the guide channel. When the linkage roller moves in the guide channel, the linkage roller drives the guide plug to move away from the outer oil hole, so that the outer oil hole is exposed, and then the lubricating oil enters the outer oil hole through the guide channel, and the lubricating oil in the outer oil hole covers the linkage roller. When the ball drives the linkage roller to rotate, the linkage roller coats the lubricating oil on the ball, thereby achieving the effect of lubricating the ball surface. When the ball is separated from the linkage roller, the linkage spring resets and drives the guide plug to move toward the outer oil hole, so that the guide plug closes the outer oil hole, and then the lubricating oil is sealed in the outer oil cavity, thereby achieving the effect of the guide plug moving in the guide channel.

[0011] Preferably, a group of guide rods are fixedly arranged between the inner wall of the guide channel and the inner wall of the outer oil chamber, and the guide rods pass through the guide plug.

[0012] By adopting the above technical solution, when the guide plug moves along the guide channel, the guide plug moves along the guide rod, thereby reducing the situation where the guide plug is skewed and causes oil leakage in the outer oil hole.

[0013] Preferably, a retaining frame is arranged between the inner ring shell and the outer ring shell, a plurality of retaining holes are arranged on the retaining frame, the balls are arranged in the retaining holes for rolling, inner shoulders are fixedly arranged on both sides of the inner ring shell, an inner raceway is formed between the inner ring shell and the inner shoulders, the inner wall of the inner raceway is fitted with the outer wall of the ball, outer shoulders are fixedly arranged on both sides of the outer ring shell, an outer raceway is formed between the outer ring shell and the outer shoulders, the inner wall of the outer raceway is fitted with the outer wall of the ball.

[0014] By adopting the above technical solution, during the movement of the balls in the outer raceway and the inner raceway, the balls rotate relatively in the retaining holes, and the retaining frame, the inner shoulder and the outer shoulder all play a role in stabilizing the movement of the balls.

[0015] Preferably, a plurality of clearance grooves are provided on the inner wall of the retaining hole, and lubricating blocks are arranged in the clearance grooves. The lubricating blocks are arranged on a side away from the clearance grooves for contacting with the outer wall of the ball.

[0016] By adopting the above technical solution, when the ball and the retaining hole rotate relatively, the lubricating block and the outer wall of the ball move relatively, so that the lubricating block applies grease to the surface of the ball.

[0017] Preferably, a group of connecting grooves are provided on the inner wall of the give way groove, connecting plates are slidably arranged in the connecting grooves, mounting plates are fixedly arranged between the connecting plates, the mounting plates are slidably arranged in the give way groove, one side of the mounting plate is connected to the lubrication block, and an elastic layer is provided on the other side of the mounting plate, and the elastic layer abuts against the inner wall of the give way groove.

[0018] By adopting the above technical solution, as the number of contacts between the lubricating block and the ball increases, the thickness of the lubricating block will decrease, and the elastic layer will deform to push the lubricating block to move along the give way groove, so that the outer wall of the lubricating block is always in contact with the outer wall of the ball, reducing the separation of the lubricating block and the ball, thereby achieving the effect of lubricating the ball by the lubricating block.

[0019] Preferably, an inner oil cavity is provided in the retaining frame, a plurality of inner oil holes are provided on the inner wall of the retaining hole, a lubricating roller is arranged to roll in the inner oil hole, and the lubricating roller is in contact with the outer wall of the ball.

[0020] By adopting the above technical solution, the lubricating roller is rollingly arranged in the inner oil hole, and the lubricating roller forms a limit for the ball, so that the ball can stably rotate in the mounting hole. When the ball moves, the lubricating roller rotates relatively, and at the same time, the lubricating roller is self-lubricated by the lubricating oil in the inner oil cavity, reducing the friction of the lubricating roller on the ball.

[0021] Preferably, an external oil filling hole is provided on the outer ring shell, and the external oil filling hole is connected with the external oil cavity. A plurality of internal oil filling holes are provided on the retaining frame, and the internal oil filling holes are connected with the internal oil cavity. Oil filling nozzles are provided in both the external oil filling hole and the internal oil filling hole.

[0022] By adopting the above technical solution, lubricating oil is injected into the inner oil cavity and the outer oil cavity through the lubricating nozzle.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. By arranging the inner ring shell, the outer ring shell, the ball, the outer oil cavity, the guide channel, the outer oil hole, the guide plug and the linkage assembly, when the ball rolls relatively between the inner ring shell and the outer ring shell, the lubricating oil is coated on the ball, reducing the friction force on the surface of the ball, so as to achieve the effect of lubricating the ball bearing. At the same time, the equipment does not need to be shut down when the ball bearing is lubricated, which reduces the situation of equipment shutdown for ball bearing maintenance;

[0025] 2. By setting the linkage spring and linkage roller, the outer oil hole is exposed during the relative movement between the ball and the outer ring shell, and the outer oil hole is closed when the ball and the linkage roller are separated;

[0026] 3. By providing an inner oil cavity, an inner oil hole and a lubricating roller, the ball can stably rotate in the mounting hole, reducing the friction between the cage and the ball. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a cross-sectional view of a reinforced ball bearing for a heavy-duty mining truck in an embodiment of the present application.

[0028] Figure 2 It is a cross-sectional view showing the connection relationship between the ball and the outer ring shell in the embodiment of the present application.

[0029] Figure 3 yes Figure 2 Enlarged view of part A.

[0030] Figure 4 It is a cross-sectional view showing the connection relationship between the linkage roller and the outer ring shell in the embodiment of the present application.

[0031] Figure 5 It is a cross-sectional view showing the connection relationship between the ball and the retaining frame in the embodiment of the present application.

[0032] Figure 6 yes Figure 5 Magnified view of part B.

[0033] Figure 7 yes Figure 5 Magnified view of part C.

[0034] Figure 8 It is a schematic diagram of the structure of a reinforced ball bearing for a heavy-duty mining truck in an embodiment of the present application.

[0035] Explanation of the reference numerals: 1. Inner ring shell; 11. Inner shoulder; 12. Inner raceway; 2. Outer ring shell; 21. Outer shoulder; 22. Outer raceway; 3. Ball; 31. Cage; 32. Cage hole; 4. Outer oil chamber; 41. Outer oil hole; 5. Guide channel; 51. Guide plug; 52. Guide rod; 6. Linkage assembly; 61. Linkage spring; 62. Linkage roller; 7. Inner oil chamber; 71. Inner oil hole; 72. Lubricating roller; 8. Oiling nozzle; 81. Outer oiling hole; 82. Inner oiling hole; 9. Lubricating block; 91. Make way groove; 911. Mounting plate; 912. Elastic layer; 92. Connecting groove; 921. Connecting plate. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-8 This application is described in further detail.

[0037] The present application discloses a reinforced ball bearing for heavy mining trucks. Figures 1 to 8, comprising an inner ring shell 1 and an outer ring shell 2, the inner ring shell 1 and the outer ring shell 2 are coaxially arranged, and the outer ring shell 2 is sleeved on the outer side of the inner ring shell 1. Inner shoulders 11 are installed on both sides of the inner ring shell 1, and an inner raceway 12 is formed between the inner ring shell 1 and the inner shoulder 11. Outer shoulders 21 are installed on both sides of the outer ring shell 2, and an outer raceway 22 is formed between the outer ring shell 2 and the outer shoulder 21. A retainer 31 is arranged between the inner ring shell 1 and the outer ring shell 2, and a plurality of retaining holes 32 are arranged on the retainer 31. Balls 3 are rolled in the retaining holes 32, and the outer walls of the balls 3 are in contact with the inner walls of the inner raceway 12, and the outer walls of the balls 3 are in contact with the inner walls of the outer raceway 22. By adopting the above technical solution, during the movement of the balls 3 in the outer raceway 22 and the inner raceway 12, the balls 3 rotate relatively in the retaining holes 32, and the retainer 31, the inner shoulders 11 and the outer shoulders 21 all play the role of stabilizing the movement of the balls 3. An outer oil cavity 4 is provided inside the outer ring shell 2, and a plurality of flow guide channels 5 are provided on the inner wall of the outer oil cavity 4. An outer oil hole 41 is provided at one end of the flow guide channel 5 away from the outer oil cavity 4, and the outer oil hole 41 penetrates the inner wall of the outer ring shell 2. The flow guide channel 5 and the outer oil hole 41 are both arranged along the diameter direction of the outer ring shell 2, and the inner diameter of the flow guide channel 5 is larger than the inner diameter of the outer oil hole 41. A flow guide plug 51 is movably arranged in the flow guide channel 5, and there is a gap between the side wall of the flow guide plug 51 and the inner wall of the flow guide channel 5. When the bottom of the flow guide plug 51 is tightly attached to the step formed by the flow guide channel 5 and the outer oil hole 41, the flow guide plug 51 closes the outer oil hole 41. A linkage assembly 6 is provided on the flow guide plug 51, and the linkage assembly 6 is used to make the flow guide plug 51 slide in the flow guide hole. When the ball 3 rolls relatively between the inner ring shell 1 and the outer ring shell 2, the ball 3 drives the linkage assembly 6 to move, and the linkage assembly 6 makes the flow guide plug 51 slide in the flow guide hole. When a gap appears between the bottom of the flow guide plug 51 and the inner wall of the flow guide channel 5, the outer oil hole 41 is exposed, and the lubricating oil in the outer oil chamber 4 enters the outer oil hole 41 through the flow guide channel 5. The lubricating oil in the outer oil hole 41 is coated on the ball 3, reducing the friction force on the surface of the ball 3, thereby achieving the effect of lubricating the ball bearing. At the same time, the equipment does not need to be shut down for ball bearing lubrication, which reduces the need for equipment shutdown to maintain the ball bearing.

[0038] In order to achieve the effect that the ball 3 drives the guide plug 51 to move in the guide channel 5, refer to Figures 1 to 4The linkage assembly 6 includes a linkage spring 61 and a linkage roller 62. One end of the linkage spring 61 is fixedly connected to the inner wall of the outer oil chamber 4, and the other end of the linkage spring 61 is fixedly connected to the end of the guide plug 51 away from the outer oil hole 41. The other end of the guide plug 51 is rotatably connected to the linkage roller 62. The other end of the linkage roller 62 away from the guide plug 51 protrudes from the outer oil hole 41, and the linkage roller 62 is used to contact the ball 3. A group of guide rods 52 are installed between the inner wall of the guide channel 5 and the inner wall of the outer oil chamber 4, and the guide rods 52 penetrate the guide plug 51. During the rolling process of the ball 3, the ball 3 rotates itself, and at the same time, the ball 3 and the outer ring shell 2 move relative to each other. During the relative movement of the ball 3 and the outer ring shell 2, the ball 3 will push the linkage roller 62 to move into the guide channel 5. When the linkage roller 62 moves into the flow guide channel 5, the linkage roller 62 drives the flow guide plug 51 to move away from the outer oil hole 41, exposing the outer oil hole 41, and then the lubricating oil enters the outer oil hole 41 through the flow guide channel 5, and the lubricating oil in the outer oil hole 41 covers the linkage roller 62. When the ball 3 drives the linkage roller 62 to rotate, the linkage roller 62 applies the lubricating oil to the ball 3, achieving the effect of lubricating the surface of the ball 3; when the friction between the ball 3 and the linkage roller 62 is very small, the linkage roller 62 does not rotate, and the linkage roller 62 does not apply the lubricating oil to the ball 3. When the ball 3 is separated from the linkage roller 62, the linkage spring 61 resets and drives the flow guide plug 51 to move toward the outer oil hole 41, so that the flow guide plug 51 closes the outer oil hole 41, and then the lubricating oil is sealed in the outer oil chamber 4. When the guide plug 51 moves along the guide channel 5, the guide plug 51 moves along the guide rod 52, reducing the situation where the guide plug 51 is skewed and causes oil leakage in the outer oil hole 41. Therefore, when the ball 3 moves to contact the linkage roller 62 and the ball 3 and the linkage roller 62 move relative to each other during the rolling process of the ball 3, the lubricating oil is coated on the ball 3.

[0039] In order to reduce the friction between the cage 31 and the ball 3, refer to Figures 5 to 7, a plurality of clearance grooves 91 are provided on the inner wall of the retaining hole 32, a group of connecting grooves 92 are provided on the inner wall of the clearance groove 91, a connecting piece 921 is slidably provided in the connecting groove 92, a mounting piece 911 is provided between the connecting pieces 921, and the mounting piece 911 is slidably provided in the clearance groove 91. An elastic layer 912 of sponge material is abutted between the mounting piece 911 and the inner wall of the clearance groove 91, and a lubricating block 9 is installed on the side of the mounting piece 911 facing the ball 3, and the lubricating block 9 is a solid made of lipid material. The lubricating block 9 is slidably connected with the clearance groove 91, and the side of the lubricating block 9 away from the clearance groove 91 is used to contact with the outer wall of the ball 3. One side of the mounting piece 911 is connected to the lubricating block 9. An inner oil chamber 7 is provided in the retaining frame 31, a plurality of inner oil holes 71 are provided on the inner wall of the retaining hole 32, and a lubricating roller 72 is rolled in the inner oil hole 71, and the lubricating roller 72 is in contact with the outer wall of the ball 3. The lubricating roller 72 limits the ball 3, so that the ball 3 can rotate stably in the mounting hole, and the distance between the outer wall of the roller and the inner wall of the mounting hole is always consistent. When the ball 3 rotates relative to the retaining hole 32, on the one hand, the lubricating roller 72 rotates relative to each other, and at the same time, the lubricating roller 72 is self-lubricated by the lubricating oil in the inner oil chamber 7, reducing the friction of the lubricating roller 72 on the ball 3; on the other hand, the lubricating block 9 moves relative to the outer wall of the ball 3, so that the lubricating block 9 applies grease on the surface of the ball 3. As the number of contacts between the lubricating block 9 and the ball 3 increases, the thickness of the lubricating block 9 decreases, and the elastic layer 912 deforms to push the lubricating block 9 to move along the clearance groove 91, so that the outer wall of the lubricating block 9 is always in contact with the outer wall of the ball 3. The separation of the lubricating block 9 and the ball 3 is reduced, so that the lubricating block 9 can lubricate the ball 3.

[0040] To facilitate the replenishment of lubricating oil, refer to Figures 1 to 8 The outer ring shell 2 is provided with an outer oil injection hole 81, which is connected to the outer oil chamber 4. The retainer 31 is provided with a plurality of inner oil injection holes 82, which are connected to the inner oil chamber 7. Oil injection nozzles 8 are installed in both the outer oil injection holes 81 and the inner oil injection holes 82, and lubricating oil is injected into the inner oil chamber 7 and the outer oil chamber 4 through the lubrication nozzles.

[0041] The implementation principle of the reinforced ball bearing for heavy mining trucks in the embodiment of the present application is as follows: when the ball 3 rolls relatively between the inner ring shell 1 and the outer ring shell 2, the ball 3 pushes the linkage roller 62 to move into the flow guide channel 5. When the linkage roller 62 moves into the flow guide channel 5, the linkage roller 62 drives the flow guide plug 51 to move away from the outer oil hole 41, exposing the outer oil hole 41, and then the lubricating oil enters the outer oil hole 41 through the flow guide channel 5, and the lubricating oil in the outer oil hole 41 covers the linkage roller 62. When the friction between the ball 3 and the linkage roller 62 is sufficient to drive the linkage roller 62 to rotate, the linkage roller 62 coats the lubricating oil on the ball 3 to achieve the effect of lubricating the surface of the ball 3; when the friction between the ball 3 and the linkage roller 62 is very small, the linkage roller 62 does not rotate, and the linkage roller 62 does not coat the lubricating oil on the ball 3. When the ball 3 is separated from the linkage roller 62, the linkage spring 61 is reset to drive the guide plug 51 to move toward the outer oil hole 41, so that the guide plug 51 closes the outer oil hole 41, and then the lubricating oil is sealed in the outer oil chamber 4. Therefore, during the rolling process of the ball 3, when the ball 3 moves to contact the linkage roller 62, and the ball 3 and the linkage roller 62 move relative to each other, the effect of lubricating oil coating on the ball 3 is achieved. When the ball 3 and the retaining hole 32 rotate relative to each other, the lubricating block 9 coats the grease on the surface of the ball 3 to reduce the surface friction of the ball 3; when the lubricating roller 72 rotates relative to each other, the lubricating roller 72 is self-lubricated by the lubricating oil in the inner oil chamber 7 to reduce the surface friction of the lubricating roller 72. Then, when the lubricating roller 72 contacts the ball 3 and rotates relative to each other, the friction between the lubricating roller 72 and the ball 3 is reduced. Thus, the ball bearing can be self-lubricated during use by means of the linkage roller 62, the lubricating roller 72 and the lubricating block 9. At the same time, the equipment does not need to be shut down for lubrication of the ball bearing, thus reducing the need for equipment shutdown to maintain the ball bearing.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A reinforced ball bearing for a heavy mining truck, comprising an inner ring shell (1) and an outer ring shell (2), wherein a plurality of balls (3) are arranged for rolling between the inner ring shell (1) and the outer ring shell (2), characterized in that: An outer oil cavity (4) is provided inside the outer ring shell (2), a plurality of flow guide channels (5) are provided on the inner wall of the outer oil cavity (4), an outer oil hole (41) is provided at one end of the flow guide channel (5) away from the outer oil cavity (4), the outer oil hole (41) penetrates the inner wall of the outer ring shell (2), the inner diameter of the flow guide channel (5) is larger than the inner diameter of the outer oil hole (41), a flow guide plug (51) is movably provided in the flow guide channel (5), a gap exists between the side wall of the flow guide plug (51) and the inner wall of the flow guide channel (5), the flow guide plug (51) is used to close the outer oil hole (41), a linkage assembly (6) is provided on the flow guide plug (51), the linkage assembly (6) is used to make the flow guide plug (51) slide in the flow guide hole.

2. The reinforced ball bearing for heavy mining trucks according to claim 1, characterized in that: The linkage assembly (6) comprises a linkage spring (61) and a linkage roller (62); one end of the linkage spring (61) is fixedly connected to the inner wall of the outer oil chamber (4); the other end of the linkage spring (61) is fixedly connected to the end of the guide plug (51) away from the outer oil hole (41); the other end of the guide plug (51) is rotatably connected to the linkage roller (62); the other end of the linkage roller (62) away from the guide plug (51) protrudes from the outer oil hole (41); and the linkage roller (62) is used to contact the ball (3).

3. The reinforced ball bearing for heavy mining trucks according to claim 1, characterized in that: A group of guide rods (52) are fixedly arranged between the inner wall of the guide channel (5) and the inner wall of the outer oil chamber (4), and the guide rods (52) penetrate the guide plug (51).

4. The reinforced ball bearing for heavy mining trucks according to claim 1, characterized in that: A retaining frame (31) is arranged between the inner ring shell (1) and the outer ring shell (2), and a plurality of retaining holes (32) are arranged on the retaining frame (31). The balls (3) are rollingly arranged in the retaining holes (32). Inner shoulders (11) are fixedly arranged on both sides of the inner ring shell (1), and an inner raceway (12) is formed between the inner ring shell (1) and the inner shoulder (11). The inner wall of the inner raceway (12) is in contact with the outer wall of the balls (3). Outer shoulders (21) are fixedly arranged on both sides of the outer ring shell (2), and an outer raceway (22) is formed between the outer ring shell (2) and the outer shoulder (21). The inner wall of the outer raceway (22) is in contact with the outer wall of the balls (3).

5. The reinforced ball bearing for heavy mining trucks according to claim 4, characterized in that: The inner wall of the retaining hole (32) is provided with a plurality of clearance grooves (91), and a lubricating block (9) is arranged in the clearance grooves (91). The side of the lubricating block (9) away from the clearance grooves (91) is used to contact the outer wall of the ball (3).

6. A reinforced ball bearing for heavy mining trucks according to claim 5, characterized in that: A group of connecting grooves (92) are provided on the inner wall of the clearance groove (91), connecting pieces (921) are slidably arranged in the connecting grooves (92), mounting pieces (911) are fixedly arranged between the connecting pieces (921), the mounting pieces (911) are slidably arranged in the clearance groove (91), one side of the mounting piece (911) is connected to the lubrication block (9), and the other side of the mounting piece (911) is provided with an elastic layer (912), and the elastic layer (912) is in contact with the inner wall of the clearance groove (91).

7. The reinforced ball bearing for heavy mining trucks according to claim 4, characterized in that: An inner oil cavity (7) is provided in the retaining frame (31), a plurality of inner oil holes (71) are provided on the inner wall of the retaining hole (32), a lubricating roller (72) is arranged in a rolling manner in the inner oil hole (71), and the lubricating roller (72) is in contact with the outer wall of the ball (3).

8. The reinforced ball bearing for heavy mining trucks according to claim 7, characterized in that: The outer ring shell (2) is provided with an external oil injection hole (81), the external oil injection hole (81) is communicated with the external oil chamber (4), the retaining frame (31) is provided with a plurality of internal oil injection holes (82), the internal oil injection holes (82) are communicated with the internal oil chamber (7), and oil injection nozzles (8) are provided in both the external oil injection hole (81) and the internal oil injection hole (82).

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