A needle bearing with high load capacity

Abstract

The application discloses a high-load-capacity needle bearing and relates to the technical field of bearings. The high-load-capacity needle bearing comprises a bearing ring assembly, a bearing retaining assembly and a guide assembly fixed on the surface of the bearing retaining assembly. The bearing retaining assembly comprises a retainer, the outer surface of the retainer is provided with an installation groove, and the inner wall of the installation groove is uniformly provided with a plurality of needle holes in the circumferential direction. When the ceramic material-made ball body is in contact with the outer ring side groove and the inner ring side groove, the rolling friction coefficient is significantly reduced, which helps to reduce energy loss and improve the rotating speed of the bearing during operation. The ball body can share part of the load borne by the retainer. During the operation of the bearing, especially when a large radial or axial load is borne, the ball body can uniformly transmit part of the load to the bearing outer ring and the bearing inner ring, thereby reducing the burden of the retainer and improving the overall load-carrying capacity of the bearing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bearings, in particular to a high-load-capacity needle bearing. BACKGROUND

[0002] The needle bearing is a type of bearing, which uses a needle as a rolling element. The needle has a small diameter and a long length. Compared with other types of rolling bearings, the needle bearing has a high radial load capacity. In the transmission system of some large industrial equipment, such as mining machinery and metallurgical equipment, the traditional needle bearing is prone to needle wear, deformation, and even bearing failure under high load conditions, which affects the normal operation and service life of the equipment. Therefore, a needle bearing is needed to withstand large radial loads and impact loads.

[0003] The needle bearing in the prior art has high load capacity, but the number of needles in the needle bearing is large, and the contact points and contact areas between the needles and the inner and outer ring raceways and the cage are correspondingly increased. When rotating at high speed, the end of the needle is subjected to a large pressure, and the friction between the end and the pocket hole also increases. The increased friction at these contact points consumes more energy, limiting the increase in the rotational speed of the bearing. Therefore, more power is needed to drive it, which increases energy consumption and operating costs.

[0004] Therefore, we propose a high-load-capacity needle bearing to solve the problems mentioned above. SUMMARY

[0005] The present application aims to provide a high-load-capacity needle bearing to solve the problem of the existing needle bearing that the friction increases when the load capacity is improved, resulting in a decrease in the rotational speed of the bearing during use.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: a high-load-capacity needle bearing, comprising a bearing sleeve assembly, a bearing retaining assembly, and a guide assembly fixed on the surface of the bearing retaining assembly, the bearing retaining assembly comprising a cage, the outer surface of the cage being provided with a mounting groove, the inner wall of the mounting groove being uniformly provided with a plurality of needle holes in the circumferential direction, and the outer surface of the cage being provided with a plurality of ball grooves near both ends, the inner wall of each ball groove being movably connected with a plurality of ball bodies, and the diameter of the ball body being the same as that of the needle body, which is used to reduce the friction between the needle body and the inner and outer rings during rotation of the bearing, the ball body being made of ceramic material, which has a higher hardness than the needle body made of bearing steel, and the ceramic material is used to reduce end friction, while the needle body continues to bear the main radial load.

[0007] Preferably, the plurality of needle holes are uniformly arranged to uniformly separate the needle bodies and maintain correct spacing and relative positions in the respective positions.

[0008] Preferably, the needle bodies are clamped inside the needle holes to rotate, and the ball bodies are clamped inside the ball grooves to rotate, so that the needle bodies and the ball bodies cannot automatically fall off during rotation.

[0009] Preferably, the guide assembly is provided with two groups, one of which includes a plurality of first guide blocks, each of which is fixedly connected to the inner wall of the retainer, and the outer surface of each first guide block is provided with a first movable groove, and the inner wall of each first movable groove is rotatably connected with a plurality of first movable balls, and the first movable balls are clamped inside the first movable groove to rotate and cannot automatically fall off.

[0010] The other guide assembly includes a plurality of second guide blocks, each of which is fixedly connected to the outer surface of the retainer, and the outer surface of each second guide block is provided with a second movable groove, and the inner wall of each second movable groove is rotatably connected with a plurality of second movable balls, and the second movable balls are clamped inside the second movable groove to rotate and cannot automatically fall off.

[0011] Preferably, the bearing ring assembly includes a bearing outer ring and a bearing inner ring, the inner wall of the bearing outer ring is provided with an outer ring positioning groove in the middle, and the inner wall of the bearing outer ring is provided with an outer ring edge groove near both ends, the outer surface of the bearing inner ring is provided with an inner ring positioning groove in the middle, and the outer surface of the bearing inner ring is provided with an inner ring edge groove near both ends.

[0012] Preferably, the plurality of needle bodies move between the outer ring positioning groove and the inner ring positioning groove, the ball bodies move between the outer ring edge groove and the inner ring edge groove, and the outer surface of the first movable ball is in contact with the inner wall of the inner ring edge groove, and the outer surface of the second movable ball is in contact with the inner wall of the outer ring edge groove.

[0013] Preferably, the bearing outer ring is provided with an outer ring connecting groove at both ends, the inner wall of the two outer ring connecting grooves is rotatably connected with an outer ring connecting ring, the bearing inner ring is provided with an inner ring connecting groove at both ends, the inner wall of the two inner ring connecting grooves is rotatably connected with an inner ring connecting ring, and the outer surface of the outer ring connecting ring and the inner ring connecting ring is fixedly connected with a dustproof ring, and the dustproof ring is used to prevent dust particles from entering the inside of the bearing.

[0014] Preferably, the outer surface of the bearing outer ring is provided with a guide groove, the inner side wall of the guide groove is provided with an oil injection port, and the oil injection port is used to inject lubricating oil into the inside of the bearing, and the inner wall of the guide groove is fixedly connected with a mark block near the oil injection port, which is used to quickly identify the position of the oil injection port.

[0015] Preferably, one end of the oil inlet is fixedly connected with a shunt channel, two ends of the shunt channel are respectively penetrated to the inside of two shunt channels, which are used for conveying lubricating oil to the shunt channel to lubricate the ball body, two lubricating pipes are arranged on the inner wall of the shunt channel, and the two lubricating pipes are respectively penetrated to the inside of the outer ring positioning groove and the inner ring positioning groove.

[0016] Compared with the prior art, the application has the following beneficial effects:

[0017] 1. In use, when the ball body made of ceramic material is in contact with the outer ring side groove and the inner ring side groove, the rolling friction coefficient is significantly reduced, which helps to reduce energy loss and improve the rotation speed of the bearing during operation. The ball body can share part of the load borne by the retainer. During the operation of the bearing, especially when bearing large radial or axial load, the ball body can uniformly transmit part of the load to the bearing outer ring and the bearing inner ring, thereby reducing the burden of the retainer and improving the overall load capacity of the bearing. The retainer is made of glass fiber reinforced plastic, which has high strength, high rigidity and low density, thereby reducing the weight of the bearing and improving the rotation speed of the bearing. Moreover, the friction coefficient is low, and the friction between the rolling element and the ball body can be further reduced under the condition of adding lubricating oil.

[0018] 2. In use, the plurality of first guide blocks and the plurality of second guide blocks cooperate with the outer ring side groove on the bearing outer ring to form a good guide structure, so that the two ends of the retainer do not shake during high-speed rotation of the bearing, thereby improving the stability. The first movable ball and the second movable ball movably installed in the first movable groove and the second movable groove are in contact with the inner ring side groove and the outer ring side groove, which can make the rotation more smooth and avoid the rotation speed of the bearing to be reduced during use.

[0019] 3. In use, the bearing outer ring is sleeved on the outside of the retainer, and the bearing inner ring is clamped into the inside of the retainer. All the rolling elements move between the outer ring positioning groove and the inner ring positioning groove, and the transverse position is limited. The ball body rotates between the outer ring side groove and the inner ring side groove, so that the bearing does not disintegrate during high-speed rotation. The dustproof ring is installed between the bearing outer ring and the bearing inner ring, thereby blocking the fine dust and impurities in the environment from entering the inside of the bearing, avoiding the continuous friction between the bearing and the impurity particles during operation, improving the rotation speed of the bearing and prolonging the service life of the bearing. The lubricating oil is injected from the oil inlet, and the lubricating oil is injected into the outer ring positioning groove and the two outer ring side grooves. The rolling elements and the ball body will stick to the lubricating oil during rotation, thereby lubricating the internal parts of the bearing and improving the rotation speed of the bearing. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 isometric view of a high load capacity needle bearing of the present invention;

[0021] Figure 2 first perspective exploded view of a high load capacity needle bearing of the present invention;

[0022] Figure 3 second perspective exploded view of a high load capacity needle bearing of the present invention;

[0023] Figure 4 partial cross-sectional view of a bearing cup assembly portion of a high load capacity needle bearing of the present invention;

[0024] Figure 5 isometric view of a high load capacity needle bearing of the present invention; Figure 4 enlarged view of area A in the present invention;

[0025] Figure 6 isometric view of a high load capacity needle bearing of the present invention; Figure 4 enlarged view of area B in the present invention;

[0026] Figure 7 partial cross-sectional view of a bearing cup assembly portion of a high load capacity needle bearing of the present invention;

[0027] Figure 8 partial cross-sectional view of a bearing cup assembly portion of a high load capacity needle bearing of the present invention;

[0028] Figure 9 partial cross-sectional view of a bearing cup assembly portion of a high load capacity needle bearing of the present invention;

[0029] Figure 10 partial cross-sectional view of a bearing cup assembly portion of a high load capacity needle bearing of the present invention;

[0030] Figure 11 isometric view of a high load capacity needle bearing of the present invention; Figure 10 enlarged view of area C in the present invention.

[0031] In the drawings:

[0032] 1. Bearing ring assembly; 101. Bearing outer ring; 102. Bearing inner ring; 103. Dust shield; 104. Guide groove; 105. Identification block; 106. Outer ring connecting ring; 107. Inner ring connecting ring; 108. Outer ring connecting groove; 109. Inner ring connecting groove; 110. Oil injection port; 111. Shunt passage; 112. Lubrication pipeline; 113. Outer ring positioning groove; 114. Outer ring side groove; 115. Inner ring positioning groove; 116. Inner ring side groove; 2. Bearing retainer assembly; 201. Retainer; 202. Mounting groove; 203. Needle hole; 204. Needle body; 205. Ball groove; 206. Ball body; 3. Guide assembly; 301. First guide block; 302. First movable groove; 303. First movable ball; 304. Second guide block; 305. Second movable groove; 306. Second movable ball. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0034] Embodiment one: refer to Figures 1-11As shown, the present application provides a technical scheme: a high load capacity needle bearing, comprising a bearing ring assembly 1, a bearing retaining assembly 2 and a guide assembly 3 fixed on the surface of the bearing retaining assembly 2, the bearing retaining assembly 2 comprises a retainer 201, the outer surface of the retainer 201 is provided with a mounting groove 202, the inner wall of the mounting groove 202 is uniformly provided with a plurality of needle holes 203 in the circumferential direction, the outer surface of the retainer 201 is provided with a plurality of ball grooves 205 near the two ends, the inner wall of each ball groove 205 is movably connected with a plurality of ball bodies 206, and the diameter of the ball body 206 is the same as that of the needle body 204, which is used to reduce the friction between the needle body 204 and the inner and outer rings during the rotation of the bearing, the ball body 206 is made of ceramic material, which has higher hardness than the needle body 204 made of bearing steel, and the ceramic characteristics are used to reduce the end friction, while the needle body 204 continues to bear the main radial load task, the plurality of needle holes 203 are uniformly arranged, which is used to uniformly separate the needle body 204, so that it maintains the correct spacing and relative position in its respective position, the needle body 204 is clamped and set inside the needle hole 203 to rotate, the ball body 206 is clamped and set inside the ball groove 205 to rotate, so that the needle body 204 and the ball body 206 cannot automatically fall off during rotation, the bearing ring assembly 1 comprises a bearing outer ring 101 and a bearing inner ring 102, the inner wall of the bearing outer ring 101 is provided with an outer ring positioning groove 113 in the middle, the inner wall of the bearing outer ring 101 is provided with an outer ring edge groove 114 near the two ends, the outer surface of the bearing inner ring 102 is provided with an inner ring positioning groove 115 in the middle, the outer surface of the bearing inner ring 102 is provided with an inner ring edge groove 116 near the two ends, a plurality of needle bodies 204 are movably arranged between the outer ring positioning groove 113 and the inner ring positioning groove 115, the ball body 206 is movably arranged between the outer ring edge groove 114 and the inner ring edge groove 116, and the outer surface of the first movable ball 303 is in contact with the inner wall of the inner ring edge groove 116, and the outer surface of the second movable ball 306 is in contact with the inner wall of the outer ring edge groove 114.

[0035] In use, the needle body 204 is inserted into each needle hole 203, so that it can rotate without falling, and the ball body 206 is installed in the ball groove 205. The number of ball bodies 206 in each ball groove 205 is the same. The ball body 206 is made of ceramic, which has high hardness and small friction with the cage 201. When the ball body 206 as a rolling body contacts the outer ring side groove 114 and the inner ring side groove 116, rolling friction replaces sliding friction. Compared with the direct contact between the outer wall of the cage 201 and the bearing outer ring 101 and the bearing inner ring 102, the rolling friction coefficient is significantly reduced, which helps to reduce energy loss and improve the rotation speed of the bearing. The ball body 206 can share part of the load of the cage 201. During the operation of the bearing, especially when bearing large radial or axial load, the ball body 206 can evenly transfer part of the load to the bearing outer ring 101 and the bearing inner ring 102, reducing the burden of the cage 201 and improving the overall load capacity of the bearing. In addition, the cage 201 is made of glass fiber reinforced plastic, which has high strength, high rigidity and low density, can reduce the weight of the bearing, improve the rotation speed of the bearing, and has a low friction coefficient. In the case of adding lubricating oil, the friction between the needle body 204 and the ball body 206 can be further reduced.

[0036] Embodiment two: Figures 1-11 As shown, the guide assembly 3 is provided with two groups, one of which includes a plurality of first guide blocks 301, each first guide block 301 is fixedly connected to the inner wall of the cage 201, and the outer surface of each first guide block 301 is provided with a first movable groove 302, the inner wall of each first movable groove 302 is rotatably connected with a plurality of first movable balls 303, and the first movable balls 303 are clamped inside the first movable groove 302 and cannot automatically fall off. Another guide assembly 3 includes a plurality of second guide blocks 304, each second guide block 304 is fixedly connected to the outer surface of the cage 201, the outer surface of each second guide block 304 is provided with a second movable groove 305, the inner wall of each second movable groove 305 is rotatably connected with a plurality of second movable balls 306, and the second movable balls 306 are clamped inside the second movable groove 305 and cannot automatically fall off, and the outer surface of the first movable ball 303 is in contact with the inner wall of the inner ring side groove 116, and the outer surface of the second movable ball 306 is in contact with the inner wall of the outer ring side groove 114.

[0037] In this embodiment, in use, a plurality of first guide blocks 301 are arranged at both ends of the inner part of the retainer 201 in the circumferential direction, and cooperate with the inner ring side grooves 116 on the bearing inner ring 102, and a plurality of second guide blocks 304 are arranged at both ends of the outer part of the retainer 201, which cooperate with the outer ring side grooves 114 on the bearing outer ring 101, forming a good guide structure, so that the two ends of the retainer 201 do not shake when the bearing rotates at high speed, and the stability can be improved. The first movable ball 303 and the second movable ball 306 movably installed in the first movable groove 302 and the second movable groove 305 are in contact with the inner ring side groove 116 and the outer ring side groove 114, which can make the rotation more smooth, and avoid the speed reduction of the bearing during use.

[0038] Embodiment three: Figures 1-11 As shown, the bearing ring assembly 1 comprises a bearing outer ring 101 and a bearing inner ring 102. The inner wall of the bearing outer ring 101 is provided with an outer ring positioning groove 113 in the middle, and the inner wall of the bearing outer ring 101 is provided with an outer ring side groove 114 near both ends. The outer surface of the bearing inner ring 102 is provided with an inner ring positioning groove 115 in the middle, and the outer surface of the bearing inner ring 102 is provided with an inner ring side groove 116 near both ends. A plurality of needle bodies 204 are movably arranged between the outer ring positioning groove 113 and the inner ring positioning groove 115. The ball body 206 moves between the outer ring side groove 114 and the inner ring side groove 116. The outer surface of the first movable ball 303 is in contact with the inner wall of the inner ring side groove 116, and the outer surface of the second movable ball 306 is in contact with the inner wall of the outer ring side groove 114. The two ends of the bearing outer ring 101 are provided with outer ring connecting grooves 108, and the inner walls of the two outer ring connecting grooves 108 are rotatably connected with outer ring connecting rings 106. The two ends of the bearing inner ring 102 are provided with inner ring connecting grooves 109, and the inner walls of the two inner ring connecting grooves 109 are rotatably connected with inner ring connecting rings 107. The outer surfaces of the outer ring connecting ring 106 and the inner ring connecting ring 107 are fixedly connected with the dustproof ring 103, and the dustproof ring 103 is used to prevent dust particles from entering the inside of the bearing. The outer surface of the bearing outer ring 101 is provided with a guide groove 104, and the inner side wall of the guide groove 104 is provided with an oil inlet 110. The oil inlet 110 is used to inject lubricating oil into the inside of the bearing. The inner wall of the guide groove 104 is fixedly connected with a mark block 105 near the oil inlet 110, which is used to quickly identify the position of the oil inlet 110. One end of the oil inlet 110 is fixedly connected with a shunt channel 111, and the two ends of the shunt channel 111 are respectively penetrated into the inside of the two shunt channels 111, which is used to deliver lubricating oil to the shunt channel 111 to lubricate the ball body 206. The inner wall of the shunt channel 111 is provided with two lubricating pipes 112 near the middle, and the two lubricating pipes 112 are penetrated into the inside of the outer ring positioning groove 113, which is used to deliver lubricating oil to the outer ring positioning groove 113 to lubricate the needle body 204.

[0039] In use, the assembly of the needle bodies 204 and the ball bodies 206 in the cage 201 is first completed, then the outer ring 101 is sleeved on the outside of the cage 201, and in this process, a certain external force needs to be applied to make the outer ring 101 cooperate with the cage 201 in place, the outer ring 101 generates radial pressure on the needle bodies 204 and the ball bodies 206, and because the needle bodies 204 and the ball bodies 206 are constrained by the cage 201, they will generate a reaction force on the pressure of the outer ring 101, so that the cage 201 will be extruded and shrinkage deformation occurs, thereby enabling the outer ring 101 to be stably clamped on the outside of the cage 201, then the inner ring 102 is clamped into the inside of the cage 201, and in contrast to the installation of the outer ring 101, the insertion of the inner ring 102 will extrude the cage 201 outwardly by the needle bodies 204, thereby causing the cage 201 to expand and deform, so that the outer ring 101, the inner ring 102 and the cage 201 are installed as a whole, at this time, all the needle bodies 204 are movable between the outer ring positioning groove 113 and the inner ring positioning groove 115, the transverse position is limited, and the ball bodies 206 rotate between the outer ring side groove 114 and the inner ring side groove 116, so that the bearing will not disintegrate during high-speed rotation, next, the outer ring connecting ring 106 corresponds to the outer ring connecting groove 108, the inner ring connecting ring 107 corresponds to the inner ring connecting groove 109, and then the dustproof ring 103 is pressed, under the pressing force, the dustproof ring 103 is installed between the outer ring 101 and the inner ring 102, the installation tightness is low, and will not affect the rotation of the bearing, the installation directions of the dustproof rings 103 at both ends are the same, thereby achieving the benefit of blocking the dust and impurities in the equipment and the environment from entering the inside of the bearing, avoiding the bearing from constantly rubbing with impurity particles during operation, and having the effects of improving the rotation speed of the bearing and prolonging the service life of the bearing, after the bearing is used for a long time, the lubricating oil is injected from the oil injection port 110 into the inner part of the shunt channel 111 and the lubricating pipeline 112, the lubricating oil is injected into the outer ring positioning groove 113 and the two outer ring side grooves 114, respectively, the needle bodies 204 and the ball bodies 206 will constantly stick with the lubricating oil during rotation, thereby lubricating the parts inside the bearing, and thereby being able to improve the rotation speed of the bearing, the oil injection port 110 can be found by the identification block 105.

[0040] The method for using the device and the working principle are as follows: in use, firstly, the assembly of the needle roller body 204 and the ball body 206 in the retainer 201 is completed, then the bearing outer ring 101 is sleeved outside the retainer 201, in this process, a certain external force needs to be applied to make the bearing outer ring 101 cooperate with the retainer 201 in place, the bearing outer ring 101 generates radial pressure on the needle roller body 204 and the ball body 206, because the needle roller body 204 and the ball body 206 are constrained by the retainer 201, the pressure of the bearing outer ring 101 generates a reaction force, then the retainer 201 is extruded and shrinks, thereby enabling the bearing outer ring 101 to be stably clamped outside the retainer 201, then the bearing inner ring 102 is clamped into the inside of the retainer 201, and the bearing inner ring 102 is inserted to extrude the retainer 201 outward, thereby causing the retainer 201 to expand and deform, so that the bearing outer ring 101, the bearing inner ring 102 and the retainer 201 are installed as a whole, at this time, all the needle roller bodies 204 move between the outer ring positioning groove 113 and the inner ring positioning groove 115, the transverse position is limited, and the ball body 206 rotates between the outer ring side groove 114 and the inner ring side groove 116, so that the bearing does not disintegrate during high-speed rotation, next, the outer ring connecting ring 106 corresponds to the outer ring connecting groove 108, the inner ring connecting ring 107 corresponds to the inner ring connecting groove 109, and then the dustproof ring 103 is pressed, under the pressing force, the dustproof ring 103 is installed between the bearing outer ring 101 and the bearing inner ring 102, the installation tightness is low and does not affect the rotation of the bearing, the installation directions of the dustproof rings 103 at both ends are the same, thereby achieving the benefit of blocking dust and impurities in the equipment and the environment from entering the inside of the bearing, after the bearing is used for a long time, lubricating oil is injected from the oil injection port 110 into the inside of the lubricating oil injection port 110, the drainage channel 111 and the lubricating pipeline 112, the lubricating oil is injected into the outer ring positioning groove 113 and the two outer ring side grooves 114, respectively, the needle roller body 204 and the ball body 206 will constantly stick to the lubricating oil when rotating, thereby lubricating the parts in the inside of the bearing, the oil injection port 110 can be found by the identification block 105, in use, the needle roller body 204 is correspondingly clamped into each needle roller hole 203, so that the needle roller body 204 can rotate without falling off, then the ball body 206 is clamped and installed in the ball groove 205, the number of the ball bodies 206 in each ball groove 205 is the same, the material of the ball body 206 is ceramic, the ceramic hardness is high, the friction between the ceramic and the retainer 201 is small, when the ball body 206 as the rolling body contacts the outer ring side groove 114 and the inner ring side groove 116, rolling friction replaces sliding friction, compared with the two end outer walls of the retainer 201 directly contacting the bearing outer ring 101 and the bearing inner ring 102, the rolling friction coefficient is significantly reduced,The ball body 206 can share part of the load borne by the retainer 201. During the operation of the bearing, especially when bearing large radial or axial load, the ball body 206 can evenly transmit part of the load to the bearing outer ring 101 and the bearing inner ring 102, thereby reducing the burden of the retainer 201. In addition, the retainer 201 is made of glass fiber reinforced plastic, which has high strength, high rigidity and low density, thereby reducing the weight of the bearing. During use, a plurality of first guide blocks 301 are circumferentially arranged at both ends of the retainer 201, and the inner ring side groove 116 on the bearing inner ring 102 is matched with the first guide blocks 301. A plurality of second guide blocks 304 are arranged at both ends of the outer part of the retainer 201, and the outer ring side groove 114 on the bearing outer ring 101 is matched with the second guide blocks 304, thereby forming a good guide structure. Therefore, when the bearing rotates at high speed, the two ends of the retainer 201 will not shake, and the stability can be improved. The first movable ball 303 and the second movable ball 306 movably arranged in the first movable groove 302 and the second movable groove 305 are in contact with the inner ring side groove 116 and the outer ring side groove 114, thereby making the rotation more smooth.

[0041] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can make modifications to the technical solutions described in the foregoing embodiments, or make equivalent replacements to part of the technical features, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A needle bearing with high load capacity comprising a bearing raceway assembly (1), a bearing retainer assembly (2) and a guide assembly (3) fixed to the surface of the bearing retainer assembly (2), characterized in that: The bearing retaining assembly (2) comprises a retainer (201), an installation groove (202) is formed in the outer surface of the retainer (201), a plurality of needle holes (203) are uniformly formed in the inner wall of the installation groove (202) in the circumferential direction, a plurality of ball grooves (205) are formed in the outer surface of the retainer (201) close to both ends, a plurality of ball bodies (206) are movably connected to the inner wall of each ball groove (205), and the diameter of the ball body (206) is the same as that of the needle body (204), which is used to reduce the friction between the needle body (204) and the inner and outer rings during the rotation of the bearing, the ball body (206) is made of ceramic material, and the hardness of the ball body (206) is higher than that of the needle body (204) made of bearing steel; the characteristics of ceramic are used to reduce end friction, and the needle body (204) continues to bear the main radial load task; The guide assembly (3) is provided with two groups, one of which comprises a plurality of first guide blocks (301), each first guide block (301) is fixedly connected to the inner wall of the retainer (201), a first movable groove (302) is formed in the outer surface of each first guide block (301), a plurality of first movable balls (303) are rotatably connected to the inner wall of each first movable groove (302), and the first movable balls (303) are clamped in the first movable groove (302) and cannot automatically fall off during rotation; the other guide assembly (3) comprises a plurality of second guide blocks (304), each second guide block (304) is fixedly connected to the outer surface of the retainer (201), a second movable groove (305) is formed in the outer surface of each second guide block (304), a plurality of second movable balls (306) are rotatably connected to the inner wall of each second movable groove (305), and the second movable balls (306) are clamped in the second movable groove (305) and cannot automatically fall off during rotation.

2. Needle bearing with high load capacity according to claim 1, characterized in that: A plurality of needle holes (203) are uniformly arranged, which are used to uniformly separate the needle bodies (204) and keep correct spacing and relative positions at respective positions.

3. Needle bearing with high load capacity according to claim 2, characterized in that: The needle body (204) is clamped in the needle hole (203) and rotates, the ball body (206) is clamped in the ball groove (205) and rotates, so that the needle body (204) and the ball body (206) cannot automatically fall off during rotation.

4. The high load capacity needle bearing of claim 1, wherein: The bearing sleeve assembly (1) comprises a bearing outer ring (101) and a bearing inner ring (102), an outer ring positioning groove (113) is formed in the middle of the inner wall of the bearing outer ring (101), outer ring edge grooves (114) are formed in the inner wall of the bearing outer ring (101) close to both ends, an inner ring positioning groove (115) is formed in the middle of the outer surface of the bearing inner ring (102), and inner ring edge grooves (116) are formed in the outer surface of the bearing inner ring (102) close to both ends.

5. The high load capacity needle bearing of claim 4, wherein: The plurality of needle bodies (204) are movable between the outer ring positioning groove (113) and the inner ring positioning groove (115), the ball body (206) is movable between the outer ring side groove (114) and the inner ring side groove (116), and the outer surface of the first movable ball (303) is in contact with the inner wall of the inner ring side groove (116), and the outer surface of the second movable ball (306) is in contact with the inner wall of the outer ring side groove (114).

6. The high load capacity needle bearing of claim 5, wherein: The outer wall of the bearing outer ring (101) is provided with an outer ring connecting groove (108), the inner wall of the two outer ring connecting grooves (108) is rotatably connected with an outer ring connecting ring (106), the outer wall of the bearing inner ring (102) is provided with an inner ring connecting groove (109), the inner wall of the two inner ring connecting grooves (109) is rotatably connected with an inner ring connecting ring (107), the outer surface of the outer ring connecting ring (106) and the inner ring connecting ring (107) is fixedly connected with a dustproof ring (103), and the dustproof ring (103) is used for preventing dust particles from entering the bearing.

7. The high load capacity needle bearing of claim 6, wherein: The outer surface of the bearing outer ring (101) is provided with a guide groove (104), the inner side wall of the guide groove (104) is provided with an oil inlet (110), and the oil inlet (110) is used for injecting lubricating oil into the bearing. The inner wall of the guide groove (104) is fixedly connected with a mark block (105) near the oil inlet (110), which is used for quickly identifying the position of the oil inlet (110).

8. The high load capacity needle bearing of claim 7, wherein: One end of the oil inlet (110) is fixedly connected with a shunt channel (111), and the two ends of the shunt channel (111) are respectively penetrated into the two shunt channels (111), which is used for conveying lubricating oil to the shunt channel (111) to lubricate the ball body (206). The inner wall of the shunt channel (111) is provided with two lubricating pipes (112) near the middle, and the two lubricating pipes (112) are respectively penetrated into the outer ring positioning groove (113), which is used for conveying lubricating oil to the outer ring positioning groove (113) to lubricate the needle body (204).

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