High-sealing-performance bearing structure for humanoid robot

Abstract

The invention relates to the technical field of bearings, and discloses a high-sealing-performance bearing structure for a humanoid robot, which comprises an inner ring, a retainer is arranged on the outer side of the inner ring, a plurality of roller bodies are arranged on the retainer, an outer ring is arranged on the outer sides of the roller bodies, and a lubricating oil injection port is formed in one side of the outer ring; the lubricating oil extrusion assembly is arranged on the outer side of the inner ring, and the lubricating oil extrusion assembly comprises a square groove. The outer side of the inner ring is provided with a second elastic piece and an extrusion plate, and when the inner ring rotates to generate centrifugal force, the second elastic piece and the extrusion plate move towards the inner wall of the retainer, so that lubricating oil staying in a space formed among the inner side of the retainer, the outer side of the roller body and the outer side of the inner ring is extruded towards the inner wall of the retainer; lubricating oil is in contact with the roller body through the flow dividing channels, so that the lubricating oil in the bearing can be in full contact with the roller body, a good lubricating effect is achieved, and waste of the lubricating oil caused by accumulation of the lubricating oil on the inner wall of the retainer is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of bearings, and specifically to a highly sealed bearing structure for humanoid robots. Background Art

[0002] A bearing is an important component in contemporary mechanical equipment and is an indispensable component for humanoid robots. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotational accuracy.

[0003] The existing bearing structure consists of an inner ring, an outer ring, a roller body, a cage, and a seal. When the bearing is in use, lubricating oil needs to be injected into it to achieve the effect of lubrication and increased lifespan. However, there will be a certain space between the inner ring, the cage, and the roller body, and the lubricating oil will enter this part of the space. When the bearing rotates, affected by the centrifugal force, the lubricating oil will accumulate on the inner wall of the cage, resulting in waste of the lubricating oil, and the roller body cannot obtain a good lubrication effect. Summary of the Invention

[0004] The purpose of the present invention is to provide a highly sealed bearing structure for humanoid robots to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A highly sealed bearing structure for humanoid robots, comprising:

[0006] An inner ring, a cage is provided on the outer side of the inner ring, a plurality of roller bodies are provided on the cage, an outer ring is provided on the outer side of the roller bodies, and a lubricating oil injection port is provided on one side of the outer ring;

[0007] A lubricating oil extrusion assembly, which is provided on the outer side of the inner ring. The lubricating oil extrusion assembly includes a square groove. A square groove is opened on the outer side of the inner ring. A circular groove is opened at the bottom of the inner cavity of the square groove. An elastic member II is connected to the bottom of the inner cavity of the circular groove. The top of the elastic member II is fixedly installed with an extrusion plate. A diversion channel is opened on the cage. The diversion channel communicates the inner side of the cage and the inner cavity for placing the roller bodies.

[0008] As a further improvement of the present invention, a plurality of square grooves and circular grooves are provided on the outer side of the inner ring, and the square grooves and circular grooves are located below the adjacent two roller bodies.

[0009] As a further improvement of the present invention, the outer side of the extrusion plate is in an arc shape and is consistent with the outer contour of the inner ring.

[0010] As a further improvement of the present invention, sealing members I are connected to both the front and rear sides of the outer ring, sealing members II are connected to both the front and rear sides of the inner ring, an annular groove is formed in the rear side of the sealing member II, and a sealing ring located in the inner cavity of the annular groove is installed on the front side of the sealing member I.

[0011] As a further improvement of the present invention, the number of the annular grooves and the sealing rings is the same and both are multiple, and the diameters of the multiple annular grooves and the sealing rings are gradually decreased and arranged on the rear side of the sealing member II.

[0012] As a further improvement of the present invention, the overall shape of the sealing member I is L-shaped, and the outer side of the sealing member II is located inside the L shape of the sealing member I.

[0013] As a further improvement of the present invention, a heat dissipation component is provided on the sealing member II, and the heat dissipation component includes a movable groove, a heat conduction rod, and a heat conduction block. A movable groove is formed in the sealing member II, the heat conduction rod is movably sleeved in the inner cavity of the movable groove, and the heat conduction block is arranged on the rear side of the heat conduction rod.

[0014] As a further improvement of the present invention, one side of the heat conduction block facing the pressing plate is inclined, and is located above the outer side of the pressing plate, and a set of heat dissipation components are arranged on both the front and rear sides of the pressing plate.

[0015] As a further improvement of the present invention, the heat dissipation component further includes a connecting plate, a partition plate, a blocking plate, and an elastic member I. The partition plate is fixedly installed in the middle of the inner cavity of the movable groove, the blocking plate is arranged on the front side of the inner cavity of the movable groove, the front side of the heat conduction block is connected to the rear side of the partition plate by the elastic member I, and the connecting plate is connected to the outer side of the heat conduction rod.

[0016] As a further improvement of the present invention, the connecting plate is located between the partition plate and the blocking plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. For the high-sealing bearing structure for humanoid robots, by providing the elastic member II and the pressing plate on the outer side of the inner ring, when the inner ring rotates to generate centrifugal force, the elastic member II and the pressing plate move towards the inner wall of the cage, so that the lubricating oil staying in the space formed between the inner side of the cage, the outer side of the drum body and the outer side of the inner ring is squeezed towards the inner wall of the cage, so that the lubricating oil passes through the diversion channel and contacts the drum body, enabling the lubricating oil in this bearing to fully contact the drum body, achieving a good lubricating effect, and avoiding the waste of lubricating oil caused by the accumulation of lubricating oil on the inner wall of the cage.

[0019] 2. The high-sealing bearing structure for the humanoid robot has a movable groove, a heat-conducting rod, and a heat-conducting block in the inner cavity of the second seal. When the seal ring and the second seal rotate together and the pressing plate moves outward under the centrifugal force, since the surface of the heat-conducting block facing the pressing plate is inclined, the heat-conducting block and the heat-conducting rod are pushed to move towards the outside of the second seal, so that the heat-conducting rod extends from the front side of the second seal to contact the outside air. The heat-conducting rod and the heat-conducting block are used to conduct the heat inside the inner ring and the inner side of the outer ring to the outside for heat dissipation.

[0020] 3. The high-sealing bearing structure for the humanoid robot connects the first seal and the second seal through an annular groove and the outer ring. The seal ring blocks the lubricating oil between the inner ring and the outer ring, and there are multiple seal rings for multi-layer blocking, making it difficult for the lubricating oil between the inner ring and the outer ring to flow out from the gap between the inner ring and the outer ring, achieving a good sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of a high-sealing bearing structure for a humanoid robot according to the present invention;

[0023] Figure 2 It is an exploded view between the inner ring and the outer ring of a high-sealing bearing structure for a humanoid robot according to the present invention;

[0024] Figure 3 It is an exploded view between the pressing plate and the square groove of a high-sealing bearing structure for a humanoid robot according to the present invention;

[0025] Figure 4 It is a cross-sectional view of the outside of the cage of a high-sealing bearing structure for a humanoid robot according to the present invention;

[0026] Figure 5 It is an exploded view between the first seal and the second seal of a high-sealing bearing structure for a humanoid robot according to the present invention;

[0027] Figure 6 It is a cross-sectional view between the first seal and the second seal of a high-sealing bearing structure for a humanoid robot according to the present invention;

[0028] Figure 7 It is a high-sealing bearing structure for a humanoid robot according to the present invention Figure 6 The enlarged view at A in

[0029] Figure 8 This is a schematic structural diagram of the application of a highly sealed bearing structure for a humanoid robot in a humanoid robot according to the present invention.

[0030] In the figure: 1, inner ring; 2, outer ring; 3, sealing ring; 4, first seal; 5, second seal; 6, heat dissipation component; 61, movable groove; 62, heat conducting rod; 63, heat conducting block; 64, connecting plate; 65, partition plate; 66, blocking plate; 67, first elastic member; 7, lubricating oil extrusion component; 71, square groove; 72, circular groove; 73, second elastic member; 74, extrusion plate; 75, diversion channel; 8, cage; 9, roller body; 10, lubricating oil injection port; 11, annular groove. Specific Embodiments

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0032] Please refer to Figures 1-8 , the present invention provides a highly sealed bearing structure for a humanoid robot, including:

[0033] An inner ring 1, a cage 8 is provided on the outer side of the inner ring 1, a plurality of roller bodies 9 are provided on the cage 8, an outer ring 2 is provided on the outer side of the roller body 9, and a lubricating oil injection port 10 is provided on one side of the outer ring 2;

[0034] A lubricating oil extrusion component 7 is provided on the outer side of the inner ring 1. The lubricating oil extrusion component 7 includes a square groove 71. A square groove 71 is opened on the outer side of the inner ring 1. A circular groove 72 is opened at the bottom of the inner cavity of the square groove 71. A second elastic member 73 is connected to the bottom of the inner cavity of the circular groove 72. The top end of the second elastic member 73 is fixedly installed with an extrusion plate 74. A diversion channel 75 is opened on the cage 8. The diversion channel 75 communicates the inner side of the cage 8 and the inner cavity for placing the roller body 9. By providing the second elastic member 73 and the extrusion plate 74 on the outer side of the inner ring 1, when the inner ring 1 rotates to generate centrifugal force, the second elastic member 73 and the extrusion plate 74 move towards the inner wall of the cage 8, so that the lubricating oil staying in the space formed between the inner side of the cage 8, the outer side of the roller body 9 and the outer side of the inner ring 1 is extruded towards the inner wall of the cage 8, so that the lubricating oil passes through the diversion channel 75 and contacts the roller body 9, so that the lubricating oil in this bearing can fully contact the roller body 9, achieving a good lubrication effect, and avoiding the accumulation of lubricating oil on the inner wall of the cage 8, resulting in waste of lubricating oil.

[0035] In this embodiment, a plurality of square grooves 71 and circular grooves 72 are provided on the outer side of the inner ring 1. The square grooves 71 and circular grooves 72 are located below the adjacent two drum bodies 9.

[0036] In this embodiment, the outer side of the pressing plate 74 is in an arc shape and is consistent with the outer contour of the inner ring 1. Since the outer side of the pressing plate 74 is consistent with the outer contour of the inner ring 1, it is convenient to retract into the square groove 71 when the square groove 71 is not needed, without affecting the assembly of the cage 8 and the drum body 9 in the early stage.

[0037] In this embodiment, a first seal 4 is connected to the front and rear sides of the outer ring 2, and a second seal 5 is connected to the front and rear sides of the inner ring 1. An annular groove 11 is formed on the rear side of the second seal 5, and a sealing ring 3 located in the inner cavity of the annular groove 11 is installed on the front side of the first seal 4.

[0038] In this embodiment, the number of the annular grooves 11 and the sealing rings 3 is the same and both are multiple, and the diameters of the multiple annular grooves 11 and the sealing rings 3 are gradually decreased and arranged on the rear side of the second seal 5. The outer side of the sealing ring 3 does not contact the inner wall of the annular groove 11, and there is a small gap between the two. The first seal 4 and the second seal 5 are connected by using the annular groove 11 and the outer ring 2. The sealing ring 3 blocks the lubricating oil between the inner ring 1 and the outer ring 2, and there are multiple sealing rings 3 for multi-layer blocking, so that the lubricating oil between the inner ring 1 and the outer ring 2 is difficult to flow out from the gap between the inner ring 1 and the outer ring 2, achieving a good sealing effect.

[0039] In this embodiment, the whole of the first seal 4 is in an L shape, and the outer side of the second seal 5 is located inside the L shape of the first seal 4. The route for the lubricating oil to overflow is extended, and it has high sealing performance.

[0040] In this embodiment, a heat dissipation component 6 is provided on the second seal 5. The heat dissipation component 6 includes a movable groove 61, a heat conducting rod 62, and a heat conducting block 63. A movable groove 61 is formed on the second seal 5, and the inner cavity of the movable groove 61 is movably sleeved with the heat conducting rod 62, and a heat conducting block 63 is provided on the rear side of the heat conducting rod 62.

[0041] In this embodiment, one surface of the heat conducting block 63 facing the pressing plate 74 is in an inclined plane and is located above the outer side of the pressing plate 74. A set of heat dissipation components 6 is provided on the front and rear sides of the pressing plate 74. Through the movable groove 61, the heat conducting rod 62, and the heat conducting block 63 provided in the inner cavity of the second seal 5, when the pressing plate 74 moves outward under the centrifugal force when the sealing ring 3 and the second seal 5 rotate together, since one surface of the heat conducting block 63 facing the pressing plate 74 is in an inclined plane, the heat conducting block 63 and the heat conducting rod 62 are pushed to move towards the outer side of the second seal 5, so that the heat conducting rod 62 extends out from the front side of the second seal 5 to contact the outside air, and it is convenient to conduct the heat inside the inner ring 1 and the outer ring 2 to the outside for heat dissipation by using the heat conducting rod 62 and the heat conducting block 63.

[0042] In this embodiment, the heat dissipation component 6 further includes a connecting plate 64, a partition plate 65, a baffle plate 66 and a first elastic member 67. A partition plate 65 is fixedly installed in the middle of the inner cavity of the movable groove 61. A baffle plate 66 is provided on the front side of the inner cavity of the movable groove 61. The front side of the heat conducting block 63 is connected to the rear side of the partition plate 65 by the first elastic member 67. A connecting plate 64 is connected to the outer side of the heat conducting rod 62. By connecting the heat conducting block 63 to the partition plate 65 by the first elastic member 67, it is convenient for the heat conducting rod 62 and the heat conducting block 63 to reset when the bearing stops rotating, so as to facilitate heat dissipation next time.

[0043] In this embodiment, the connecting plate 64 is located between the partition plate 65 and the baffle plate 66. It plays a role in limiting, and also has a sealing effect when the heat conducting block 63 pushes the connecting plate 64 to move to the position in contact with the baffle plate 66.

[0044] The second elastic member 73 and the first elastic member 67 can be springs or other structures with elasticity and the ability to reset.

[0045] Working principle: When using this device, connect this bearing to the humanoid robot. After installation, when the bearing rotates, the inner ring 1, the cage 8, the drum body 9 and the second seal 5 on the inner ring 1 rotate together;

[0046] When the bearing rotates rapidly, since the second elastic member 73 and the pressing plate 74 are provided on the outer side of the inner ring 1, when the inner ring 1 rotates, it drives the second elastic member 73 and the pressing plate 74 to rotate. Since the second elastic member 73 and the pressing plate 74 are movably connected to the inner ring 1, the second elastic member 73 and the pressing plate 74 are affected by the centrifugal force, so that the second elastic member 73 and the pressing plate 74 move towards the inner wall of the cage 8, and the lubricating oil staying in the space formed between the inner side of the cage 8, the outer side of the drum body 9 and the outer side of the inner ring 1 is squeezed towards the inner wall of the cage 8, so that the lubricating oil passes through the diversion channel 75 and contacts the drum body 9;

[0047] At this time, the pressing plate 74 moves and contacts the inclined surface on the heat conducting block 63, thereby pushing the heat conducting block 63 and the heat conducting rod 62 to move towards the outer side of the second seal 5. The connecting plate 64 on the heat conducting rod 62 moves to the position in contact with the baffle plate 66, and the heat conducting block 63 and the heat conducting rod 62 will no longer move. The heat conducting rod 62 extends from the front side of the second seal 5 and contacts the outside air, and uses the heat conducting rod 62 and the heat conducting block 63 to conduct the heat inside the inner ring 1 and the inner side of the outer ring 2 to the outside for heat dissipation;

[0048] When the inner ring 1, the cage 8, the drum body 9 and the second seal 5 on the inner ring 1 rotate together, the annular groove 11 on the second seal 5 rotates along the sealing ring 3 on the first seal 4. By providing a plurality of sealing rings 3 and annular grooves 11 between the first seal 4 and the second seal 5, a good sealing effect is achieved;

[0049] When the inner ring 1 does not rotate, the heat conducting block 63 is reset by the elastic force of the first elastic member 67, and the pressing plate 74 is reset by the elastic force of the second elastic member 73.

[0050] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-sealing bearing structure for a humanoid robot, characterized in that, Comprising: An inner ring (1), a cage (8) is provided on the outer side of the inner ring (1), a plurality of roller bodies (9) are provided on the cage (8), an outer ring (2) is provided on the outer side of the roller bodies (9), and a lubricating oil injection port (10) is provided on one side of the outer ring (2); A lubricating oil extrusion assembly (7), arranged on the outer side of the inner ring (1), the lubricating oil extrusion assembly (7) includes a square groove (71), a square groove (71) is opened on the outer side of the inner ring (1), a circular groove (72) is opened at the bottom of the inner cavity of the square groove (71), an elastic member II (73) is connected to the bottom of the inner cavity of the circular groove (72), a pressing plate (74) is fixedly installed at the top of the elastic member II (73), a diversion channel (75) is opened on the cage (8), and the diversion channel (75) communicates the inner side of the cage (8) and the inner cavity for placing the roller bodies (9).

2. The high-sealing bearing structure for a humanoid robot according to claim 1, wherein A plurality of square grooves (71) and circular grooves (72) are provided on the outer side of the inner ring (1), and the square grooves (71) and circular grooves (72) are located below the adjacent two roller bodies (9).

3. The high-sealing bearing structure for a humanoid robot according to claim 1, characterized in that, The outer side of the pressing plate (74) is in an arc shape and is consistent with the outer contour of the inner ring (1).

4. A highly-sealed bearing structure for a humanoid robot according to claim 1, characterized in that, Sealing members I (4) are connected to the front and rear sides of the outer ring (2), sealing members II (5) are connected to the front and rear sides of the inner ring (1), an annular groove (11) is opened at the rear side of the sealing member II (5), and a sealing ring (3) located in the inner cavity of the annular groove (11) is installed on the front side of the sealing member I (4).

5. A highly sealed bearing structure for a humanoid robot according to claim 4, characterized in that, The number of the annular grooves (11) and the sealing rings (3) is the same and both are multiple, and the diameters of the multiple annular grooves (11) and the sealing rings (3) are gradually decreased and arranged at the rear side of the sealing member II (5).

6. The high-sealing bearing structure for a humanoid robot according to claim 4, characterized in that, The whole of the sealing member I (4) is in an L shape, and the outer side of the sealing member II (5) is located inside the L shape of the sealing member I (4).

7. A highly-sealed bearing structure for a humanoid robot according to claim 4, characterized in that, A heat dissipation assembly (6) is provided on the sealing member II (5), the heat dissipation assembly (6) includes a movable groove (61), a heat conducting rod (62), and a heat conducting block (63), a movable groove (61) is opened on the sealing member II (5), the heat conducting rod (62) is movably sleeved in the inner cavity of the movable groove (61), and a heat conducting block (63) is provided at the rear side of the heat conducting rod (62).

8. A highly-sealed bearing structure for a humanoid robot according to claim 7, characterized in that, One side of the heat conducting block (63) facing the pressing plate (74) is in an inclined plane and is located above the outer side of the pressing plate (74), and a group of heat dissipation assemblies (6) are provided on the front and rear sides of the pressing plate (74).

9. A high-sealing bearing structure for a humanoid robot according to claim 7, characterized in that, The heat dissipation assembly (6) further includes a connecting plate (64), a partition plate (65), a blocking plate (66), and an elastic member I (67), a partition plate (65) is fixedly installed in the middle of the inner cavity of the movable groove (61), a blocking plate (66) is provided at the front side of the inner cavity of the movable groove (61), the front side of the heat conducting block (63) is connected to the rear side of the partition plate (65) by the elastic member I (67), and a connecting plate (64) is connected to the outer side of the heat conducting rod (62).

10. A highly sealed bearing structure for a humanoid robot according to claim 9, characterized in that, The connecting plate (64) is located between the partition plate (65) and the blocking plate (66).

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