A high-strength outer spherical bearing and a method of using the same

Abstract

The present invention relates to the technical field of bearings, and in particular to a high-strength outer spherical bearing and a method for using the same, wherein the high-strength outer spherical bearing comprises an inner ring, an outer ring, a ball, a roller, a first retaining frame, a second retaining frame, a first sealing ring and a second sealing ring; the inner ring and the outer ring form a clamp for the ball; the ball is fixed by the first retaining frame and the second retaining frame; the roller is respectively arranged on the first retaining frame or the second retaining frame; the first sealing ring is arranged between the inner ring and the outer ring to form a sealed cavity, and the sealed cavity is filled with thermal conductive grease; the thermal expansion coefficient of the roller is greater than that of the ball; in the present invention, when the outer spherical bearing is under a large load, the ball undergoes elastic deformation due to extrusion, thereby increasing the friction of the ball during rotation and generating heat to heat the thermal conductive grease, so that the thermal conductive grease heats the wheel body, and since the thermal expansion coefficient of the roller is greater than that of the ball, it expands under the heating of the thermal conductive grease to achieve rotation support, thereby improving the strength of the entire outer spherical bearing.

Description

Technical Field

[0001] The invention relates to the technical field of bearings, and in particular to a high-strength outer spherical bearing and a use method thereof. Background Art

[0002] The outer spherical bearing is a special rolling bearing with a spherical rolling surface. It is usually composed of an inner ring, an outer ring, rolling elements and a cage. The outer spherical bearing has a large angular displacement capability and free rolling capability, and can withstand large radial and axial loads. The bearing seat is the supporting structure for the installation of the outer spherical bearing, usually made of metal or alloy materials, and has internal grooves and mounting holes that match the outer spherical bearing.

[0003] Strength refers to the ability of a material to resist deformation and fracture under the action of external forces. According to the different ways in which external forces act, it can be divided into tensile strength, compressive strength, bending strength, shear strength and torsional strength.

[0004] Existing outer spherical bearings mainly achieve pressure resistance through rolling elements (the rolling elements of existing outer spherical bearings are mostly spherical, i.e., balls). The balls of existing outer spherical bearings are widely spaced and limited in number. Adding rolling elements will permanently increase friction. However, if the outer spherical bearings are not increased, once the load suddenly increases, the rolling elements may be damaged due to insufficient strength. Therefore, there is a need for a high-strength outer spherical bearing that can achieve better pressure resistance under large loads and a method for using the same. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a high-strength outer spherical bearing capable of achieving better pressure resistance under large loads and a method of using the same.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A high-strength outer spherical bearing comprises an inner ring, an outer ring, a plurality of balls, rollers twice the number of the balls, a first retaining frame, a second retaining frame, a plurality of connecting members, a first sealing ring and a second sealing ring;

[0008] The outer surface of the inner ring is provided with a first groove, a first lower supporting groove, a second lower supporting groove, a first lower sealing groove and a second lower sealing groove; the inner surface of the outer ring is provided with a second groove corresponding to the first groove, a first upper supporting groove corresponding to the first lower supporting groove, a second upper supporting groove corresponding to the second lower supporting groove, a first upper sealing groove corresponding to the first lower sealing groove, and a second upper sealing groove corresponding to the second lower sealing groove; the first lower supporting groove and the second lower supporting groove are located on both sides of the first groove, and the first groove, the first lower supporting groove and the second lower supporting groove are located between the first lower sealing groove and the second lower sealing groove;

[0009] When the inner ring and the outer ring are matched, the first groove and the second groove form a clamp for the ball;

[0010] The plurality of balls are fixed by a first retaining frame and a second retaining frame, and there is a gap between two balls. The connection point between the first retaining frame and the second retaining frame is located at the gap; the connection points are respectively provided with connection holes;

[0011] The rollers are arranged on both sides of the interval respectively, and the rollers on both sides of the interval are located between the first upper support groove and the first lower support groove, and between the second upper support groove and the second lower support groove, and are clearance-matched; the rollers include a rotating shaft and a wheel body rotatably connected to the rotating shaft, and an axial hole is arranged at the center of the rotating shaft, and the axial hole and the connecting hole are arranged coaxially; the rotating shaft abuts against the surface of the first retainer or the second retainer;

[0012] The connecting piece is a cylinder with locking heads respectively arranged at both ends. The connecting piece passes through the shaft hole and the connecting hole to clamp the rotating shaft, the first retaining frame and the second retaining frame.

[0013] The first sealing ring is arranged between the first upper sealing groove and the first lower sealing groove, and the second sealing ring is arranged between the second upper sealing groove and the second lower sealing groove to form a sealing cavity, and the sealing cavity is filled with heat-conducting grease; the thermal expansion coefficient of the wheel body is greater than that of the ball;

[0014] The rotation of the inner ring of the high-strength outer spherical bearing drives the ball to rotate, and the ball generates friction heat with the first groove and the second groove, thereby heating the thermal conductive grease. After the thermal conductive grease heats the wheel body, the wheel body expands, and the expanded wheel body between the first upper supporting groove and the first lower supporting groove supports the first upper supporting groove and the first lower supporting groove, and the expanded wheel body between the second upper supporting groove and the second lower supporting groove supports the second upper supporting groove and the second lower supporting groove.

[0015] In order to solve the above technical problems, another technical solution adopted by the present invention is:

[0016] A method for using the above-mentioned high-strength outer spherical bearing comprises:

[0017] The outer ring is placed outside the inner ring and is not coaxially arranged;

[0018] Add a predetermined number of balls to the larger gap between the outer ring and the inner ring;

[0019] After the balls are installed, the inner ring and the outer ring are coaxially arranged, and the balls are evenly distributed in the first groove and the second groove;

[0020] After the balls are evenly distributed, they are fixed by a first cage and a second cage, and the connection holes of the first cage and the second cage are aligned with each other;

[0021] Pass the roller on one side of the high-strength outer spherical bearing through the connecting piece to the shaft hole and the connecting hole, and align the wheel body of the roller with the first lower support groove and the first upper support groove; then align the shaft hole of the roller on the other side of the high-strength outer spherical bearing with the connecting piece and insert it, and align the wheel body of the roller with the second lower support groove and the second upper support groove; fix the two ends of the connecting piece with locks;

[0022] After the first sealing ring is arranged between the first upper sealing groove and the first lower sealing groove, the high-strength outer spherical bearing is turned over, heat-conducting grease is injected into the high-strength outer spherical bearing, and the second sealing ring is arranged between the second upper sealing groove and the second lower sealing groove to form a sealing cavity.

[0023] The beneficial effect of the present invention is that when the load on the outer spherical bearing is large, the ball is squeezed, and the ball is elastically deformed due to the squeezing, thereby increasing the contact area between the ball and the first groove and the second groove. Due to the increase in the contact area, the friction increases and generates heat during the rotation of the ball. The heat-conducting grease is heated by the heat-conducting grease, and the heat is transferred to the entire sealing cavity after being heated. The wheel body is in the sealing cavity, and the wheel body is heated by the heat-conducting grease. The thermal expansion coefficient of the wheel body is greater than that of the ball, and then the wheel body expands under the heating of the heat-conducting grease and then rotates with the first upper support groove and the first lower support groove, and the second upper support groove and the second lower support groove. Support, that is, the wheel body and the inner and outer rings change from a clearance fit to an offset or interference fit, thereby improving the strength of the entire outer spherical bearing; at the same time, after the load is reduced, the friction heat is reduced due to the reduction in the contact area between the ball and the first groove and the second groove. After the temperature drops, the wheel body shrinks and changes back to a clearance fit with the inner and outer rings, thereby still ensuring lower friction under low load and meeting the speed requirement; and by connecting the roller in the gap between the two balls, the gap is the connection point for fixing the first retaining frame and the second retaining frame in the prior art, and the present application can reasonably utilize the space without causing the volume of the outer spherical bearing to be too large while improving the strength under large load conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of a high-strength outer spherical bearing according to a specific embodiment of the present invention from a first angle;

[0025] Figure 2 A second angle schematic diagram of a high-strength outer spherical bearing according to a specific embodiment of the present invention;

[0026] Figure 3 An internal exploded view of a high-strength outer spherical bearing according to a specific embodiment of the present invention;

[0027] Figure 4 This is a disassembled view of a bearing seat of a high-strength outer spherical bearing according to a specific embodiment of the present invention;

[0028] Explanation of reference numerals: 1. High-strength outer spherical bearing; 11. Inner ring; 111. First groove; 112. First lower supporting groove; 113. Second lower supporting groove; 114. First lower sealing groove; 115. Second lower sealing groove; 116. Fixing hole; 117. Fixing pin; 12. Outer ring; 121. Second groove; 122. First upper supporting groove; 123. Second upper supporting groove; 124. First upper sealing groove; 125. Second upper sealing groove; 126. Oil filling hole; 13. Ball; 14. Roller; 141. Rotating shaft; 142. Wheel body; 15. First retaining frame; 16. Second retaining frame; 17. Connecting piece; 18. First sealing ring; 19. Second sealing ring; 2. Bearing seat; 21. Limiting groove; 22. Guide groove; 23. Oiling nozzle. DETAILED DESCRIPTION

[0029] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0030] Please refer to Figures 1 to 4 A high-strength outer spherical bearing 1 comprises an inner ring 11, an outer ring 12, a plurality of balls 13, rollers 14 twice the number of the balls 13, a first retaining frame 15, a second retaining frame 16, a plurality of connecting members 17, a first sealing ring 18 and a second sealing ring 19;

[0031] The outer surface of the inner ring 11 is provided with a first groove 111, a first lower supporting groove 112, a second lower supporting groove 113, a first lower sealing groove 114 and a second lower sealing groove 115; the inner surface of the outer ring 12 is provided with a second groove 121 corresponding to the first groove 111, a first upper supporting groove 122 corresponding to the first lower supporting groove 112, a second upper supporting groove 123 corresponding to the second lower supporting groove 113, a first upper sealing groove 124 corresponding to the first lower sealing groove 114, and a second upper sealing groove 125 corresponding to the second lower sealing groove 115; the first lower supporting groove 112 and the second lower supporting groove 113 are located on both sides of the first groove 111, and the first groove 111, the first lower supporting groove 112 and the second lower supporting groove 113 are located between the first lower sealing groove 114 and the second lower sealing groove 115;

[0032] When the inner ring 11 and the outer ring 12 are matched, the first groove 111 and the second groove 121 form a clamp for the ball 13;

[0033] The plurality of balls 13 are fixed by a first retaining frame 15 and a second retaining frame 16, and there is a gap between two balls 13. The connection point between the first retaining frame 15 and the second retaining frame 16 is located at the gap; the connection points are respectively provided with connection holes;

[0034] The rollers 14 are respectively arranged on both sides of the interval, and the rollers 14 on both sides of the interval are located between the first upper support groove 122 and the first lower support groove 112, and between the second upper support groove 123 and the second lower support groove 113, and are clearance-matched; the rollers 14 include a rotating shaft 141 and a wheel body 142 rotatably connected to the rotating shaft 141, and an axial hole is arranged at the center of the rotating shaft 141, and the axial hole and the connecting hole are arranged coaxially; the rotating shaft 141 abuts against the surface of the first retaining frame 15 or the second retaining frame 16;

[0035] The connecting member 17 is a cylinder with locking heads at both ends. The connecting member 17 passes through the shaft hole and the connecting hole to clamp the rotating shaft 141, the first retaining frame 15, and the second retaining frame 16.

[0036] The first sealing ring 18 is arranged between the first upper sealing groove 124 and the first lower sealing groove 114, and the second sealing ring 19 is arranged between the second upper sealing groove 125 and the second lower sealing groove 115 to form a sealing cavity, and the sealing cavity is filled with heat-conducting grease; the thermal expansion coefficient of the wheel body 142 is greater than that of the ball 13;

[0037] The rotation of the inner ring 11 of the high-strength outer spherical bearing 1 drives the ball 13 to rotate, and the ball 13 generates friction heat with the first groove 111 and the second groove 121, thereby heating the thermal conductive grease. After the thermal conductive grease heats the wheel body 142, the wheel body 142 expands, and the expanded wheel body 142 between the first upper supporting groove 122 and the first lower supporting groove 112 supports the first upper supporting groove 122 and the first lower supporting groove 112, and the expanded wheel body 142 between the second upper supporting groove 123 and the second lower supporting groove 113 supports the second upper supporting groove 123 and the second lower supporting groove 113.

[0038] From the above description, it can be known that when the load on the outer spherical bearing is large, the ball 13 will be squeezed, and the ball 13 will be elastically deformed due to the squeezing, thereby increasing the contact area between the ball 13 and the first groove 111 and the second groove 121. Due to the increase in contact area, the friction increases and generates heat during the rotation of the ball 13, and the heat-conducting grease is heated by the heat. After the heat-conducting grease is heated, the heat is transferred to the entire sealing cavity, and the wheel body 142 is in the sealing cavity. The wheel body 142 is heated by the heat-conducting grease. The thermal expansion coefficient of the wheel body 142 is greater than that of the ball 13, and then the wheel body 142 expands under the heating of the heat-conducting grease and then realizes between the first upper support groove 122 and the first lower support groove 112, the second upper support groove 123 and the second lower support groove 113 Rotational support, that is, the wheel body 142 and the inner ring 11 and the outer ring 12 change from a clearance fit to an offset or interference fit, thereby improving the strength of the entire outer spherical bearing; at the same time, after the load is reduced, the friction heat is reduced due to the reduction in the contact area between the ball 13 and the first groove 111 and the second groove 121. After the temperature drops, the wheel body 142 shrinks and changes back to a clearance fit with the inner ring 11 and the outer ring 12, thereby still ensuring a lower friction force under low load and meeting the rotation speed requirement; and by connecting the roller 14 to the gap between the two balls 13, the gap is the connection point for fixing the first retaining frame 15 and the second retaining frame 16 in the prior art, and the present application can reasonably utilize the space without causing the volume of the outer spherical bearing to be too large while improving the strength under large load conditions.

[0039] Furthermore, the first upper supporting groove 122, the second upper supporting groove 123, the first lower supporting groove 112, and the second lower supporting groove 113 are all arc-shaped grooves;

[0040] The edge of the wheel body 142 is rounded.

[0041] From the above description, it can be seen that by rounding the edge of the wheel body 142 and the first upper support groove 122, the second upper support groove 123, the first lower support groove 112, and the second lower support groove 113 of the arc groove, a larger contact area can be achieved to avoid insufficient strength due to too small a contact area.

[0042] Furthermore, the inner ring 11 is provided with a plurality of fixing holes 116, and the inner walls of the fixing holes 116 are provided with threads;

[0043] A fixing pin 117 is disposed in the fixing hole 116 , and an outer wall of the fixing pin 117 is provided with a threaded surface that matches with the thread.

[0044] It can be seen from the above description that the provision of the fixing pin 117 can facilitate the fixing of the shaft.

[0045] Furthermore, the first retaining frame 15 , the second retaining frame 16 , and the rotating shaft 141 are all made of heat-conducting materials.

[0046] From the above description, it can be seen that through the first retaining frame 15, the second retaining frame 16 and the rotating shaft 141 made of heat-conducting material, the ball 13 can generate heat due to increased friction when the load is large, and the heat can be transferred to the wheel body 142 through the first retaining frame 15, the second retaining frame 16 and the rotating shaft 141, so that the wheel body 142 expands due to the heat.

[0047] Furthermore, a self-lubricating coating is provided on the outer surface of the outer ring 12 .

[0048] From the above description, it can be seen that the self-lubricating coating can play a self-lubricating role during installation, and no additional lubrication structure is required to lubricate it.

[0049] Furthermore, a lubrication groove or a lubrication hole is provided on the outer surface of the outer ring 12, and the lubrication groove or the lubrication hole is filled with a self-lubricating material.

[0050] From the above description, it can be seen that by filling with self-lubricating material, the outer surface of the outer ring 12 can be easily worn during use. The service life of the self-lubricating material can be designed to be the same as the service life of the high-strength outer spherical bearing 1, and it can be directly scrapped when it expires. There is no need to specially lubricate and maintain the outer surface of the outer ring 12, which saves processes.

[0051] Furthermore, the high-strength outer spherical bearing 1 further comprises a bearing seat 2, the bearing seat 2 is provided with a limiting groove 21 matched with the outer ring 12, the inner wall of the limiting groove 21 is provided with a guide groove 22, and the outer wall of the bearing seat 2 is provided with an oiling nozzle 23, and the oiling nozzle 23 is connected with the guide groove 22;

[0052] The outer ring 12 is provided with an oil filling hole 126 corresponding to the guide groove 22 , and the oil filling hole 126 is in the sealing cavity.

[0053] It can be seen from the above description that, by providing the guide groove 22 and the grease nozzle 23 , external injection of thermally conductive grease can be achieved.

[0054] Furthermore, the oil injection nozzle 23 is a one-way valve.

[0055] From the above description, it can be seen that the one-way valve can be set to prevent the lubricating oil from expanding at high temperature and flowing back out of the oiling nozzle 23, so that the lubricating oil can only flow between the outer ring 12 and the inner wall of the limiting groove 21 even in the case of expansion, thereby avoiding lubrication failure.

[0056] Furthermore, the surfaces of the inner ring 11, the outer ring 12, the balls 13, the rollers 14, the first retaining frame 15, and the second retaining frame 16 are polished.

[0057] From the above description, it can be seen that the surfaces of the inner ring 11, the outer ring 12, the balls 13, the rollers 14, the first retaining frame 15 and the second retaining frame 16 are polished to reduce the resistance during rotation and thus reduce the friction.

[0058] A method for using the high-strength outer spherical bearing 1 includes:

[0059] The outer ring 12 is sleeved outside the inner ring 11 and is non-coaxially arranged;

[0060] Add a predetermined number of balls 13 to the larger interval between the outer ring 12 and the inner ring 11;

[0061] After the balls 13 are installed, the inner ring 11 and the outer ring 12 are coaxially arranged, and the balls 13 are evenly distributed in the first groove 111 and the second groove 121;

[0062] After the balls 13 are evenly distributed, they are fixed by a first retainer 15 and a second retainer 16, and the connecting holes of the first retainer 15 and the second retainer 16 are aligned with each other;

[0063] The roller 14 on one side of the high-strength outer spherical bearing 1 is passed through the connecting piece 17 to the shaft hole and the connecting hole, and the wheel body 142 of the roller 14 is aligned with the first lower support groove 112 and the first upper support groove 122; then the shaft hole of the roller 14 on the other side of the high-strength outer spherical bearing 1 is aligned with the connecting piece 17 and inserted, and the wheel body 142 of the roller 14 is aligned with the second lower support groove 113 and the second upper support groove 123; the two ends of the connecting piece 17 are fixed by locks;

[0064] After the first sealing ring 18 is set between the first upper sealing groove 124 and the first lower sealing groove 114, the high-strength outer spherical bearing 1 is turned over, thermal conductive grease is injected into the high-strength outer spherical bearing 1, and the second sealing ring 19 is set between the second upper sealing groove 125 and the second lower sealing groove 115 to form a sealed cavity. Embodiment 1

[0065] A high-strength outer spherical bearing 1 comprises an inner ring 11, an outer ring 12, a plurality of balls 13, rollers 14 twice the number of the balls 13, a first retaining frame 15, a second retaining frame 16, a plurality of connecting members 17, a first sealing ring 18 and a second sealing ring 19;

[0066] The outer surface of the inner ring 11 is provided with a first groove 111, a first lower supporting groove 112, a second lower supporting groove 113, a first lower sealing groove 114 and a second lower sealing groove 115; the inner surface of the outer ring 12 is provided with a second groove 121 corresponding to the first groove 111, a first upper supporting groove 122 corresponding to the first lower supporting groove 112, a second upper supporting groove 123 corresponding to the second lower supporting groove 113, a first upper sealing groove 124 corresponding to the first lower sealing groove 114, and a second upper sealing groove 125 corresponding to the second lower sealing groove 115; the first lower supporting groove 112 and the second lower supporting groove 113 are located on both sides of the first groove 111, and the first groove 111, the first lower supporting groove 112 and the second lower supporting groove 113 are located between the first lower sealing groove 114 and the second lower sealing groove 115;

[0067] When the inner ring 11 and the outer ring 12 are matched, the first groove 111 and the second groove 121 form a clamp for the ball 13;

[0068] The plurality of balls 13 are fixed by a first retaining frame 15 and a second retaining frame 16, and there is a gap between two balls 13. The connection point between the first retaining frame 15 and the second retaining frame 16 is located at the gap; the connection points are respectively provided with connection holes;

[0069] The rollers 14 are respectively arranged on both sides of the interval, and the rollers 14 on both sides of the interval are located between the first upper support groove 122 and the first lower support groove 112, and between the second upper support groove 123 and the second lower support groove 113, and are clearance-matched; the rollers 14 include a rotating shaft 141 and a wheel body 142 rotatably connected to the rotating shaft 141, and an axial hole is arranged at the center of the rotating shaft 141, and the axial hole and the connecting hole are arranged coaxially; the rotating shaft 141 abuts against the surface of the first retaining frame 15 or the second retaining frame 16;

[0070] The connecting member 17 is a cylinder with locking heads at both ends. The connecting member 17 passes through the shaft hole and the connecting hole to clamp the rotating shaft 141, the first retaining frame 15, and the second retaining frame 16.

[0071] The first sealing ring 18 is arranged between the first upper sealing groove 124 and the first lower sealing groove 114, and the second sealing ring 19 is arranged between the second upper sealing groove 125 and the second lower sealing groove 115 to form a sealing cavity, and the sealing cavity is filled with heat-conducting grease; the thermal expansion coefficient of the wheel body 142 is greater than that of the ball 13;

[0072] The rotation of the inner ring 11 of the high-strength outer spherical bearing 1 drives the ball 13 to rotate, and the ball 13 generates friction heat with the first groove 111 and the second groove 121, thereby heating the thermal conductive grease. After the thermal conductive grease heats the wheel body 142, the wheel body 142 expands, and the expanded wheel body 142 between the first upper supporting groove 122 and the first lower supporting groove 112 supports the first upper supporting groove 122 and the first lower supporting groove 112, and the expanded wheel body 142 between the second upper supporting groove 123 and the second lower supporting groove 113 supports the second upper supporting groove 123 and the second lower supporting groove 113.

[0073] The first upper supporting groove 122, the second upper supporting groove 123, the first lower supporting groove 112, and the second lower supporting groove 113 are all arc-shaped grooves;

[0074] The edge of the wheel body 142 is rounded.

[0075] The inner ring 11 is provided with a plurality of fixing holes 116, and the inner walls of the fixing holes 116 are provided with threads;

[0076] A fixing pin 117 is disposed in the fixing hole 116 , and an outer wall of the fixing pin 117 is provided with a threaded surface that matches with the thread.

[0077] The first retaining frame 15 , the second retaining frame 16 , and the rotating shaft 141 are all made of heat-conducting materials.

[0078] The oil injection nozzle 23 is a one-way valve.

[0079] The surfaces of the inner ring 11, the outer ring 12, the balls 13, the rollers 14, the first retaining frame 15 and the second retaining frame 16 are polished. Embodiment 2

[0080] A high-strength outer spherical bearing 1, the same as the first embodiment will not be repeated, wherein:

[0081] The high-strength outer spherical bearing 1 also includes a bearing seat 2, on which a limiting groove 21 matching with the outer ring 12 is provided, and a guide groove 22 is provided on the inner wall of the limiting groove 21, and an oiling nozzle 23 is provided on the outer wall of the bearing seat 2, and the oiling nozzle 23 is connected with the guide groove 22;

[0082] The outer ring 12 is provided with an oil filling hole 126 corresponding to the guide groove 22 , and the oil filling hole 126 is in the sealing cavity. Embodiment 3

[0083] A high-strength outer spherical bearing 1, the same as the first embodiment will not be repeated, wherein:

[0084] A lubrication groove or lubrication hole is formed on the outer surface of the outer ring 12 , and the lubrication groove or lubrication hole is filled with a self-lubricating material. Embodiment 4

[0085] A high-strength outer spherical bearing 1, the same as the first embodiment will not be repeated, wherein:

[0086] The outer surface of the outer ring 12 is provided with a self-lubricating coating. Embodiment 5

[0087] A method for using the high-strength outer spherical bearing 1 according to any one of Embodiments 1 to 4 comprises:

[0088] The outer ring 12 is sleeved outside the inner ring 11 and is non-coaxially arranged;

[0089] Add a predetermined number of balls 13 to the larger interval between the outer ring 12 and the inner ring 11;

[0090] After the balls 13 are installed, the inner ring 11 and the outer ring 12 are coaxially arranged, and the balls 13 are evenly distributed in the first groove 111 and the second groove 121;

[0091] After the balls 13 are evenly distributed, they are fixed by a first retainer 15 and a second retainer 16, and the connecting holes of the first retainer 15 and the second retainer 16 are aligned with each other;

[0092] The roller 14 on one side of the high-strength outer spherical bearing 1 is passed through the connecting piece 17 to the shaft hole and the connecting hole, and the wheel body 142 of the roller 14 is aligned with the first lower support groove 112 and the first upper support groove 122; then the shaft hole of the roller 14 on the other side of the high-strength outer spherical bearing 1 is aligned with the connecting piece 17 and inserted, and the wheel body 142 of the roller 14 is aligned with the second lower support groove 113 and the second upper support groove 123; the two ends of the connecting piece 17 are fixed by locks;

[0093] After the first sealing ring 18 is set between the first upper sealing groove 124 and the first lower sealing groove 114, the high-strength outer spherical bearing 1 is turned over, thermal conductive grease is injected into the high-strength outer spherical bearing 1, and the second sealing ring 19 is set between the second upper sealing groove 125 and the second lower sealing groove 115 to form a sealed cavity.

[0094] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A high-strength outer spherical bearing, characterized in that: It includes an inner ring, an outer ring, a plurality of balls, rollers twice the number of the balls, a first retaining frame, a second retaining frame, a plurality of connecting parts, a first sealing ring and a second sealing ring; The outer surface of the inner ring is provided with a first groove, a first lower supporting groove, a second lower supporting groove, a first lower sealing groove and a second lower sealing groove; the inner surface of the outer ring is provided with a second groove corresponding to the first groove, a first upper supporting groove corresponding to the first lower supporting groove, a second upper supporting groove corresponding to the second lower supporting groove, a first upper sealing groove corresponding to the first lower sealing groove, and a second upper sealing groove corresponding to the second lower sealing groove; the first lower supporting groove and the second lower supporting groove are located on both sides of the first groove, and the first groove, the first lower supporting groove and the second lower supporting groove are located between the first lower sealing groove and the second lower sealing groove; When the inner ring and the outer ring are matched, the first groove and the second groove form a clamp for the ball; The plurality of balls are fixed by a first retaining frame and a second retaining frame, and there is a gap between two balls. The connection point between the first retaining frame and the second retaining frame is located at the gap; the connection points are respectively provided with connection holes; The rollers are arranged on both sides of the interval respectively, and the rollers on both sides of the interval are located between the first upper support groove and the first lower support groove, and between the second upper support groove and the second lower support groove, and are clearance-matched; the rollers include a rotating shaft and a wheel body rotatably connected to the rotating shaft, and an axial hole is arranged at the center of the rotating shaft, and the axial hole and the connecting hole are arranged coaxially; the rotating shaft abuts against the surface of the first retainer or the second retainer; The connecting piece is a cylinder with locking heads respectively arranged at both ends. The connecting piece passes through the shaft hole and the connecting hole to clamp the rotating shaft, the first retaining frame and the second retaining frame. The first sealing ring is arranged between the first upper sealing groove and the first lower sealing groove, and the second sealing ring is arranged between the second upper sealing groove and the second lower sealing groove to form a sealing cavity, and the sealing cavity is filled with heat-conducting grease; the thermal expansion coefficient of the wheel body is greater than that of the ball; The rotation of the inner ring of the high-strength outer spherical bearing drives the ball to rotate, and the ball generates friction heat with the first groove and the second groove, thereby heating the thermal conductive grease. After the thermal conductive grease heats the wheel body, the wheel body expands, and the expanded wheel body between the first upper supporting groove and the first lower supporting groove supports the first upper supporting groove and the first lower supporting groove, and the expanded wheel body between the second upper supporting groove and the second lower supporting groove supports the second upper supporting groove and the second lower supporting groove.

2. The high-strength outer spherical bearing according to claim 1, characterized in that: The first upper supporting groove, the second upper supporting groove, the first lower supporting groove, and the second lower supporting groove are all arc-shaped grooves; The edge of the wheel body is rounded.

3. The high-strength outer spherical bearing according to claim 1, characterized in that: The inner ring is provided with a plurality of fixing holes, and the inner walls of the fixing holes are provided with threads; A fixing pin is arranged in the fixing hole, and a threaded surface matching with a thread is arranged on an outer wall of the fixing pin.

4. The high-strength outer spherical bearing according to claim 1, characterized in that: The first retaining frame, the second retaining frame and the rotating shaft are all made of heat-conducting materials.

5. The high-strength outer spherical bearing according to claim 1, characterized in that: A self-lubricating coating is provided on the outer surface of the outer ring.

6. The high-strength outer spherical bearing according to claim 1, characterized in that: A lubrication groove or a lubrication hole is provided on the outer surface of the outer ring, and the lubrication groove or the lubrication hole is filled with a self-lubricating material.

7. The high-strength outer spherical bearing according to claim 1, characterized in that: The high-strength outer spherical bearing also includes a bearing seat, a limiting groove matching the outer ring is provided on the bearing seat, a guide groove is provided on the inner wall of the limiting groove, and an oil injection nozzle is provided on the outer wall of the bearing seat, and the oil injection nozzle is connected with the guide groove; The outer ring is provided with an oil replenishing hole corresponding to the guide groove, and the oil replenishing hole is connected to the sealing cavity.

8. The high-strength outer spherical bearing according to claim 7, characterized in that: The oil injection nozzle is a one-way valve.

9. The high-strength outer spherical bearing according to claim 1, characterized in that: The surfaces of the inner ring, the outer ring, the balls, the rollers, the first retaining frame and the second retaining frame are polished.

10. A method for using the high-strength outer spherical bearing according to any one of claims 1 to 9, characterized in that: include: The outer ring is placed outside the inner ring and is not coaxially arranged; Add a predetermined number of balls to the larger gap between the outer ring and the inner ring; After the balls are installed, the inner ring and the outer ring are coaxially arranged, and the balls are evenly distributed in the first groove and the second groove; After the balls are evenly distributed, they are fixed by a first cage and a second cage, and the connection holes of the first cage and the second cage are aligned with each other; Pass the roller on one side of the high-strength outer spherical bearing through the connecting piece to the shaft hole and the connecting hole, and align the wheel body of the roller with the first lower support groove and the first upper support groove; then align the shaft hole of the roller on the other side of the high-strength outer spherical bearing with the connecting piece and insert it, and align the wheel body of the roller with the second lower support groove and the second upper support groove; fix the two ends of the connecting piece with locks; After the first sealing ring is arranged between the first upper sealing groove and the first lower sealing groove, the high-strength outer spherical bearing is turned over, heat-conducting grease is injected into the high-strength outer spherical bearing, and the second sealing ring is arranged between the second upper sealing groove and the second lower sealing groove to form a sealing cavity.

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