CN116066472B

CN116066472B - Self-lubricating buffering gap-adjusting high-precision bearing for industrial robot

Info

Publication number: CN116066472B
Application number: CN202310346344.7A
Authority: CN
Inventors: 黄胜栋
Original assignee: Jiangsu Wanji Transmission Technology Co ltd
Current assignee: Jiangsu Wanji Transmission Technology Co ltd
Priority date: 2023-04-03
Filing date: 2023-04-03
Publication date: 2023-06-06
Anticipated expiration: 2043-04-03
Also published as: CN116066472A

Abstract

The invention discloses a self-lubricating buffer gap-adjusting high-precision bearing for an industrial robot, which relates to the technical field of precision bearings and comprises an outer support ring, wherein a gap-adjusting mechanism is arranged in the outer support ring, a rolling mechanism is connected to the lower side of the gap-adjusting mechanism in a rolling manner, and an inner ring mechanism is connected to the inner side of the rolling mechanism in a rolling manner. According to the invention, the cylindrical grooves and the inner parts of the liquid distribution grooves are filled with lubricating oil through the sealing interface, when the cylindrical rollers are attached to the outer surfaces of the first annular cylinder and the sealing interface and roll, the cylindrical rollers push the liquid outlet ball, the liquid outlet ball is stressed to compress the conical spring to deform the conical spring, the lubricating oil in the liquid outlet ball flows into the connecting pipe and the inner cavity of the limiting shell from the corresponding liquid distribution groove, the liquid outlet ball rolls to drive the lubricating oil to flow out, the lubricating oil of the plurality of groups simultaneously flows out, the outer surfaces of the cylindrical rollers, the first annular cylinder and the sealing interface are lubricated, and by arranging the inner ring mechanism, the self lubrication of the bearing is realized, the friction force is increased after excessive dust is reduced, and the excessive energy consumption is avoided.

Description

Self-lubricating buffering gap-adjusting high-precision bearing for industrial robot

Technical Field

The invention relates to the technical field of precision bearings, in particular to a self-lubricating buffer gap-adjusting high-precision bearing for an industrial robot.

Background

Bearings are an important component in contemporary mechanical devices. Its main functions are to support the mechanical rotator, reduce the coefficient of friction during its movement and guarantee its precision of revolution, the classification of bearings is numerous, for example: slide bearings, knuckle bearings, rolling bearings, deep groove ball bearings, angular contact ball bearings, self-aligning ball bearings, thrust ball bearings, needle bearings, combination bearings, etc., while the bearings should be supported for their function, i.e., literally interpreted to support the shaft, but this is only a part of its function, supporting it is essentially capable of bearing radial loads. It is also understood that it is used to fix the shaft and the final bearing does not affect the rotation of the shaft while restraining the shaft, effecting the transmission.

As chinese patent CN217539320U discloses a high-precision bearing of a high-sealing robot reducer, comprising: the bearing sleeve is internally provided with a mounting groove at the outer side, a front mounting ring is fixedly arranged at the inner side of the front end of the bearing sleeve, and a dust-proof groove is formed at the inner wall end of the bearing sleeve; the sealing assembly is arranged on the front side of the inner side end of the bearing sleeve, and the middle piece is arranged on the rear side of the inner side end of the bearing sleeve; the mounting frame is mounted on the outer end face of the middle piece, balls are embedded in the inner equal-angle circumference of the mounting frame, and a rear mounting ring is fixedly mounted in the rear end of the bearing sleeve; the movable groove is formed in the middle of the inner wall of the bearing sleeve, and the inner wall end of the rear end of the bearing sleeve is provided with a connecting groove which is mutually connected with the fixed ring. This high sealed high-precision bearing of robot reduction gear has strengthened holistic sealed effect, makes wholly have high seal structure, and possesses better dustproof function, avoids in the use dust entering inside.

However, in the prior art, particularly to a thrust cylindrical roller bearing, the thrust cylindrical roller bearing is configured to bear axial heavy load, and is mainly used on larger mechanical equipment, such as an industrial robot, which results in that the size of the thrust cylindrical roller bearing is generally larger, the bearing with larger size is exposed in the air in the transmission process, lubricating oil adhered to the surface of an inner cylindrical roller is easy to emit, and after dust in the air enters and adheres to the surface of the roller, the friction force inside the whole thrust cylindrical roller bearing can be increased, thus the transmission efficiency is influenced, and the energy consumption is increased.

Disclosure of Invention

The invention aims to provide a high-precision bearing for an industrial robot, which is used for solving the problems that in the prior art, the thrust cylindrical roller bearing is used for bearing axial heavy load, and is mainly used on large mechanical equipment, such as an industrial robot, the size of the thrust cylindrical roller bearing is generally large, the bearing with the large size is exposed in the air in the transmission process, lubricating oil attached to the surface of an inner cylindrical roller is easy to emit, and after dust in the air enters and is attached to the surface of the roller, the friction force in the whole thrust cylindrical roller bearing is increased, so that the transmission efficiency is influenced, and the energy consumption is increased.

In order to achieve the above purpose, the present invention provides the following technical solutions: the high-precision bearing for the self-lubricating buffering gap-adjusting industrial robot comprises an outer supporting ring, wherein a gap-adjusting mechanism is arranged in the outer supporting ring, a rolling mechanism is connected to the lower side of the gap-adjusting mechanism in a rolling manner, and an inner ring mechanism is connected to the inner side of the rolling mechanism in a rolling manner;

a plurality of runway grooves are formed in two sides of the outer support ring, and the runway grooves are uniformly distributed on the circular arcs with the same diameter;

the inner ring mechanism comprises a first ring cylinder and a second ring cylinder, wherein a plurality of liquid dividing grooves are formed in the first ring cylinder, a plurality of cylindrical grooves are formed in the first ring cylinder, the liquid dividing grooves are mutually perpendicular to the cylindrical grooves and mutually communicated, one side of the first ring cylinder is fixedly connected with a sealing interface, a tail end pipeline of the sealing interface is communicated with the cylindrical grooves, a plurality of self-lubricating end assemblies are fixedly clamped in the middle of the first ring cylinder, each self-lubricating end assembly comprises a liquid outlet ball, a limiting shell is movably clamped on the outer surface of the liquid outlet ball, a conical spring is movably clamped on the lower side of the outer surface of the liquid outlet ball, the outer side of the conical spring is in lap joint with an inner cavity of the limiting shell, a connecting pipe is movably clamped on the lower side of the conical spring, and the outer side of the connecting pipe is in threaded connection with the lower portion of the inner wall of the limiting shell.

Preferably, the lower ends of the connecting pipes are movably clamped with the upper sides of the inner walls of the liquid distribution tanks, the structure of the second annular cylinder is consistent with that of the first annular cylinder, and one side of the first annular cylinder is fixedly connected with one side of the second annular cylinder through bolts.

Preferably, the outer surface of the outer groove of the first annular cylinder is in rolling connection with the inner wall of the rolling mechanism, the rolling mechanism comprises a plurality of cylindrical rollers, and a plurality of limiting plates are in rolling clamping connection with the outer sides of the cylindrical rollers.

Preferably, one side of the limiting plate is rotatably connected with a first connecting plate and a second connecting plate, the middle part of the first connecting plate is rotatably connected with a central rod, and the outer surface of the central rod is rotatably connected with the middle part of the second connecting plate.

Preferably, two adjacent limiting plates are movably connected through a first connecting plate, a second connecting plate and a central rod, and the curvatures of the first connecting plate and the second connecting plate are consistent with those of the limiting plates.

Preferably, a plurality of arc plates are arranged on the cylindrical rollers, a plurality of lower connecting plate frames are fixedly connected to the middle parts of the outer sides of the arc plates, and four groups of bevel arms are respectively connected to the periphery of the upper side of each lower connecting plate frame in a rotating mode.

Preferably, the upper ends of the four groups of bevel arms are rotationally connected with an upper connecting plate frame, the inner threads of the middle rod parts of the four groups of bevel arms are connected with two groups of threaded steel rods and two groups of lateral threaded rods, and one ends of the two groups of threaded steel rods are rotationally connected with a mounting ring.

Preferably, the inside of other both sides of collar is rotated with the one end of two sets of side direction threaded rod and is connected, one of them screw thread steel pole's one end fixed mounting has the initiative bevel gear, two sets of side direction threaded rod's one end fixed mounting has two sets of driven bevel gears respectively, the outside of initiative bevel gear and two sets of driven bevel gear's outside meshing is connected.

Preferably, two sets of screw thread steel pole's other one end fixed joint has two sets of spliced poles, one of them the one end fixed mounting of spliced pole has the gear, two the surface of spliced pole with the inner wall activity joint of runway groove, one side fixedly connected with ring rail of outer support ring.

Preferably, the outside rotation joint of ring track has the empty slot ring, the opposite side fixedly connected with ring shell of empty slot ring, the inboard fixedly connected with of ring shell a plurality of gradual change racks, a plurality of gradual change racks with the empty slot ring is located the coplanar, a plurality of the inboard of gradual change racks with the outside meshing of a plurality of the gear is connected.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the self-lubricating bearing, the inner ring mechanism is arranged, so that the self-lubricating of the bearing is realized, the friction force is increased after excessive dust is reduced, the excessive energy consumption is avoided, before the bearing is used, the cylindrical groove and the inner parts of the plurality of liquid distribution grooves are filled with lubricating oil through the sealing interface, when the plurality of cylindrical rollers are attached to the outer surfaces of the first annular cylinder and the sealing interface and roll, the cylindrical rollers push the liquid outlet ball, the liquid outlet ball is stressed to compress the conical spring to deform, the internal lubricating oil flows into the connecting pipe and the inner cavity of the limiting shell from the corresponding liquid distribution groove, the liquid outlet ball rolls to drive the lubricating oil to flow out, the plurality of groups of lubricating oil flow out simultaneously, the outer surfaces of the plurality of cylindrical rollers, the first annular cylinder and the sealing interface are lubricated, the friction force is increased after excessive dust is reduced, the excessive energy consumption is avoided, and the self-lubricating effect is realized.

2. According to the invention, the gap adjusting mechanism is arranged to adjust the gap of the bearing roller and ensure accurate adjustment, the ring shell drives the hollow groove ring to rotate on the outer surface of the ring track through clockwise rotation, the ring shell drives a plurality of internal gradual change racks to rotate clockwise, the gradual change racks start to mesh with corresponding gears to rotate, the gears drive two groups of connecting columns to rotate in corresponding runway grooves and gather and move inwards, the connecting columns drive the gradual change racks to rotate, the threaded steel rod meshes with and rotates at the middle rod part of the corresponding angle folding arm, meshing force generated by rotation enables the rod part of the angle folding arm to move towards the middle part, so that the corresponding angle folding arm stretches and lengthens, the other end of the threaded steel rod rotates at the inside of the mounting ring, the threaded steel rod drives the driving bevel gear to rotate, the driving bevel gear drives two driven bevel gears to rotate, the corresponding lateral threaded rods rotate at the inside of the mounting ring, the two lateral threaded rods mesh with each other at the corresponding angle folding arm rod part, therefore, the lower connecting rods push the corresponding cylindrical roller to move inwards, the four groups of angle folding arms stretch towards the middle part, and the accurate adjustment of the gap between the upper connecting plate frame and the lower connecting plate frame is ensured.

3. According to the invention, the roller mechanism is arranged to realize stable gap adjustment, so that the bearing transmission is more effective, the plurality of cylindrical rollers are close to the middle part and are more attached to the outer side of the inner ring mechanism, the gap between the plurality of cylindrical rollers is reduced, the plurality of limiting plates are stressed to gather towards the middle part, and the cross structure formed by the first connecting plate, the second connecting plate and the center rod between the two adjacent limiting plates is contracted, so that the limiting plates gather towards the middle part, the plurality of cylindrical rollers are further stably limited, the gap adjustment function according to actual needs is realized, and the bearing transmission is more effective.

Drawings

FIG. 1 is a schematic diagram of a self-lubricating buffer gap-adjusting high-precision bearing for an industrial robot;

FIG. 2 is a schematic structural view of a gap adjusting mechanism in a high-precision bearing for a self-lubricating buffer gap adjusting industrial robot;

FIG. 3 is a schematic diagram of a second view angle of a gap adjusting mechanism in a high-precision bearing for a self-lubricating buffer gap adjusting industrial robot;

FIG. 4 is a schematic diagram of a part of a gap adjusting mechanism in a high-precision bearing for a self-lubricating buffer gap adjusting industrial robot;

FIG. 5 is a schematic structural view showing the details of a gap adjusting mechanism in a high-precision bearing for a self-lubricating buffer gap adjusting industrial robot;

FIG. 6 is a schematic structural view of a high-precision bearing middle rolling layer mechanism for a self-lubricating buffer gap-adjusting industrial robot;

FIG. 7 is a schematic diagram showing the development of an inner ring mechanism in a high-precision bearing for a self-lubricating buffer gap-adjusting industrial robot;

FIG. 8 is a schematic structural view of a liquid separating groove and a cylindrical groove in a high-precision bearing for a self-lubricating buffer gap-adjusting industrial robot;

fig. 9 is a schematic structural diagram of a self-lubricating end assembly in a high-precision bearing for a self-lubricating buffer gap-adjusting industrial robot.

In the figure:

1. an outer support ring;

2. a gap adjusting mechanism; 21. a gradual change rack; 22. a ring shell; 23. an empty slot ring; 24. a circular orbit; 25. a gear; 26. an arc-shaped plate; 27. a connecting column; 28. an upper connecting plate frame; 29. a lower connecting plate frame; 210. a threaded steel rod; 211. a bevel arm; 212. a drive bevel gear; 213. a driven bevel gear; 214. a lateral threaded rod; 215. a mounting ring;

3. a layer rolling mechanism; 31. a cylindrical roller; 32. a limiting plate; 33. a first connection plate; 34. a second connecting plate; 35. a central rod;

4. an inner ring mechanism; 41. a first cylinder; 42. sealing the interface; 43. a self-lubricating end assembly; 431. a liquid outlet ball; 432. a limit shell; 433. a conical spring; 434. a connecting pipe; 44. a liquid dividing tank; 45. a cylindrical groove; 46. a second cylinder;

5. runway grooves.

Description of the embodiments

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Example 1

Referring to fig. 1, 7, 8 and 9: the utility model provides a self-lubricating buffering gap-adjusting high-precision bearing for industrial robot, including outer support ring 1, the inside of outer support ring 1 is provided with gap-adjusting mechanism 2, gap-adjusting mechanism 2's downside roll is connected with rolling layer mechanism 3, rolling layer mechanism 3's inboard roll is connected with inner ring mechanism 4, a plurality of runway grooves 5 have been seted up to outer support ring 1's both sides, a plurality of runway grooves 5 evenly distributed are on the circular arc of same diameter, inner ring mechanism 4 includes first cylinder 41 and second cylinder 46, a plurality of branch flumes 44 have been seted up to the inside of first cylinder 41, cylindrical groove 45 has been seted up to the inside of first cylinder 41, a plurality of branch flumes 44 are mutually perpendicular and mutually link up with cylindrical groove 45, one side fixedly connected with sealing interface 42 of first cylinder 41, the tail end pipeline of the sealing interface 42 is communicated with the cylindrical groove 45, a plurality of self-lubricating end assemblies 43 are fixedly clamped in the middle of the first annular cylinder 41, each self-lubricating end assembly 43 comprises a liquid outlet ball 431, a limiting shell 432 is movably clamped on the outer surface of each liquid outlet ball 431, a conical spring 433 is movably clamped on the lower side of each outer surface of each liquid outlet ball 431, the outer side of each conical spring 433 is overlapped with the inner cavity of each limiting shell 432, a connecting pipe 434 is movably clamped on the lower side of each conical spring 433, the outer sides of the connecting pipes 434 are in threaded connection with the lower parts of the inner walls of the limiting shells 432, the lower ends of the connecting pipes 434 are movably clamped on the upper sides of the inner walls of the corresponding liquid distribution grooves 44, the structure of the second annular cylinder 46 is consistent with that of the first annular cylinder 41, and one side of each first annular cylinder 41 is fixedly connected with one side of the corresponding second annular cylinder 46 through bolts;

through before using this bearing, through the inside filling lubricating oil of sealing interface 42 to cylindricality groove 45 and a plurality of branch liquid groove 44, and when a plurality of cylindrical rollers 31 laminating first cylinder 41 and sealing interface 42 surface roll, cylindrical roller 31 promotes out liquid ball 431, go out liquid ball 431 atress compression conical spring 433 and make its deformation, inside lubricating oil flows into connecting pipe 434 and spacing shell 432 inner chamber from corresponding branch liquid groove 44, it flows to go out liquid ball 431 roll and drive lubricating oil, a plurality of groups lubricating oil flows simultaneously, the surface lubrication at a plurality of cylindrical rollers 31, first cylinder 41 and sealing interface 42, through setting up inner ring mechanism 4, realize bearing self-lubrication, reduce the too much back frictional force grow of dust, avoid the energy to consume too high.

Example 2

Referring to fig. 1-3, fig. 6: the outer surface of the outer groove of the first annular column body 41 is in rolling connection with the inner wall of the rolling mechanism 3, the rolling mechanism 3 comprises a plurality of cylindrical rollers 31, the outer sides of the cylindrical rollers 31 are in rolling clamping connection with a plurality of limiting plates 32, one side of one limiting plate 32 is rotationally connected with a first connecting plate 33 and a second connecting plate 34, the middle part of the first connecting plate 33 is rotationally connected with a center rod 35, the outer surface of the center rod 35 is rotationally connected with the middle part of the second connecting plate 34, two adjacent limiting plates 32 are movably connected through the first connecting plate 33, the second connecting plate 34 and the center rod 35, and the curvature of the first connecting plate 33 and the curvature of the second connecting plate 34 are consistent with the curvature of the limiting plates 32;

the cylindrical rollers 31 are close to the middle part, gaps between the cylindrical rollers 31 are reduced, the limiting plates 32 are stressed to gather towards the middle part, the crossed structure formed by the first connecting plates 33, the second connecting plates 34 and the center rod 35 between the two adjacent limiting plates 32 is contracted, the limiting plates 32 are gathered towards the middle part, the cylindrical rollers 31 are further stably limited, the effect of adjusting the gaps according to actual needs is achieved, the roller mechanism 3 is arranged, stable gap adjustment is achieved, and bearing transmission is guaranteed to be more effective.

Example 3

Referring to fig. 1-5: the cylindrical rollers 31 are provided with a plurality of arc plates 26, the middle part of the outer side of each arc plate 26 is fixedly connected with a lower connecting plate frame 29, four groups of bevel arms 211 are respectively and rotatably connected to the periphery of the upper side of each lower connecting plate frame 29, the upper ends of the four groups of bevel arms 211 are rotatably connected with an upper connecting plate frame 28, the inner parts of the middle rod parts of the four groups of bevel arms 211 are in threaded connection with two groups of threaded steel rods 210 and two groups of lateral threaded rods 214, one end of each threaded steel rod 210 is rotatably connected with a mounting ring 215, the other two sides of each mounting ring 215 are rotatably connected with one end of each lateral threaded rod 214, one end of each threaded steel rod 210 is fixedly provided with a driving bevel gear 212, one end of each lateral threaded rod 214 is fixedly provided with two groups of driven bevel gears 213, the other ends of each threaded steel rod 210 are fixedly clamped with two groups of connecting columns 27, one end of each connecting column 27 is fixedly provided with a gear 25, the outer surfaces of the two connecting columns 27 are movably clamped with the inner wall of a groove 5, one side of each outer supporting ring 1 is fixedly connected with a ring track 24, one side of each ring track 24 is fixedly connected with a plurality of tapered ring 21, one side of the tapered ring 21 is fixedly connected with the inner side of the same hollow ring 21, and the tapered ring 21 is fixedly connected with the tapered ring 21;

by rotating the ring shell 22 clockwise, the ring shell 22 drives the hollow groove ring 23 to rotate on the outer surface of the ring track 24, the ring shell 22 drives a plurality of gradual change racks 21 to rotate clockwise, a plurality of gradual change racks 21 start to mesh with corresponding gears 25 to rotate, the gears 25 drive two groups of connecting columns 27 to rotate in corresponding runway grooves 5 and gather and move inwards, the connecting columns 27 drive the gradual change racks 21 to rotate, the threaded steel rods 210 mesh and rotate at the middle rod parts of corresponding bevel arms 211, meshing force generated by rotation enables the rod parts of the bevel arms 211 to move towards the middle parts, the corresponding bevel arms 211 stretch and lengthen, the other ends of the threaded steel rods 210 rotate inside a mounting ring 215, the threaded steel rods 210 drive a driving bevel gear 212 to rotate, the driving bevel gear 212 drives two driven bevel gears 213 to rotate, the corresponding lateral threaded rods 214 to rotate inside the mounting ring 215, the two lateral threaded rods 214 mesh and rotate inside the corresponding bevel gears 211, thereby the four groups of bevel arms stretch and the corresponding bevel gears 211, the lower connecting rods 29 push the corresponding bevel gears 26 to move inwards, the corresponding bevel plates 26 push the middle parts to move inwards, the corresponding bevel arms 211 stretch and the corresponding bevel gears 31 to rotate inwards, the accurate adjustment gap between the four groups of bevel arms 31 is guaranteed, and the accurate adjustment gap between the roller frame and the roller frame is guaranteed, the accurate adjustment gap adjustment mechanism is realized, and the accurate adjustment gap adjustment is realized, and the gap adjustment mechanism is realized, and the gap adjustment mechanism is realized.

The application method and the working principle of the device are as follows: when the self-lubricating buffer gap-adjusting industrial robot high-precision bearing is used, the bearing is arranged on the shaft part of the industrial robot, when gap adjustment is needed, the ring shell 22 rotates clockwise, the ring shell 22 drives the empty slot ring 23 to rotate on the outer surface of the ring track 24, the ring shell 22 drives a plurality of gradual change racks 21 inside to rotate clockwise, the gradual change racks 21 start to mesh with corresponding gears 25 to rotate, the gears 25 drive two groups of connecting columns 27 to rotate in corresponding runway slots 5 and gather and move inwards, the connecting columns 27 drive the gradual change racks 21 to rotate, the threaded steel rods 210 mesh and rotate at the middle rod parts of corresponding bevel arms 211, meshing force generated by rotation enables the rod parts of the bevel arms 211 to move towards the middle parts, the corresponding bevel arms 211 stretch and lengthen, the other ends of the threaded steel rods 210 rotate inside the mounting rings 215, the threaded steel rods 210 drive the driving bevel gears 212 to rotate, the driving bevel gear 212 drives the two driven bevel gears 213 to rotate, the driven bevel gears 213 drive the corresponding lateral threaded rods 214 to rotate inside the mounting ring 215, the two lateral threaded rods 214 are meshed and rotated at the rod parts of the corresponding bevel arms 211, thus the four groups of bevel arms 211 are forced to stretch out, the lower connecting plate frame 29 pushes the corresponding arc plate 26 to move inwards, the arc plate 26 pushes the corresponding cylindrical roller 31 towards the middle part, the connection of the four groups of bevel arms 211 ensures that the distance between the upper connecting plate frame 28 and the lower connecting plate frame 29 is accurately changed, the accuracy of gap adjustment is improved, a plurality of cylindrical rollers 31 are closed towards the middle part and are more adhered to the outer side of the inner ring mechanism 4, the gaps among the cylindrical rollers 31 are reduced, a plurality of limiting plates 32 are forced to gather towards the middle part, and a cross structure formed by the first connecting plate 33, the second connecting plate 34 and the center rod 35 between the two adjacent limiting plates 32 is contracted, the limiting plate 32 is enabled to gather towards the middle part, the plurality of cylindrical rollers 31 are further stably limited, the function of adjusting gaps according to actual needs is achieved, bearing transmission is more effective, before the bearing is used, lubricating oil is fully filled into the cylindrical grooves 45 and the plurality of liquid distributing grooves 44 through the sealing interfaces 42, when the plurality of cylindrical rollers 31 are attached to the outer surfaces of the first annular cylinder 41 and the sealing interfaces 42 and roll, the cylindrical rollers 31 push the liquid outlet balls 431, the liquid outlet balls 431 are stressed to compress the conical springs 433 to deform, the lubricating oil in the liquid outlet balls 431 flows into the inner cavities of the connecting pipes 434 and the limiting shells 432 from the corresponding liquid distributing grooves 44, the liquid outlet balls 431 roll to drive the lubricating oil to flow out, the plurality of groups of lubricating oil flow out simultaneously, friction force is increased after excessive dust is reduced on the outer surfaces of the plurality of cylindrical rollers 31, the first annular cylinder 41 and the sealing interfaces 42, the excessive energy consumption is avoided, and the self-lubricating function is achieved.

Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.

Claims

1. The utility model provides a self-lubricating buffering gap-adjusting's industrial robot is with high-precision bearing, includes outer support ring (1), its characterized in that: a gap adjusting mechanism (2) is arranged in the outer support ring (1), a rolling mechanism (3) is connected to the lower side of the gap adjusting mechanism (2) in a rolling manner, and an inner ring mechanism (4) is connected to the inner side of the rolling mechanism (3) in a rolling manner;

a plurality of runway grooves (5) are formed in two sides of the outer support ring (1), and the runway grooves (5) are uniformly distributed on the circular arcs with the same diameter;

the inner ring mechanism (4) comprises a first ring cylinder (41) and a second ring cylinder (46), a plurality of liquid separating grooves (44) are formed in the first ring cylinder (41), cylindrical grooves (45) are formed in the first ring cylinder (41), a plurality of liquid separating grooves (44) are mutually perpendicular to and mutually communicated with the cylindrical grooves (45), a sealing interface (42) is fixedly connected to one side of the first ring cylinder (41), a tail end pipeline of the sealing interface (42) is communicated with the cylindrical grooves (45), a plurality of self-lubricating end assemblies (43) are fixedly clamped in the middle of the first ring cylinder (41), each self-lubricating end assembly (43) comprises a liquid outlet ball (431), a limiting shell (432) is movably clamped on the outer surface of the liquid outlet ball (431), a conical spring (433) is movably clamped on the lower side of the outer surface of the liquid outlet ball (431), the outer side of the conical spring (433) is in lap joint with an inner cavity of the limiting shell (432), a lower side of the conical spring (433) is movably clamped with the inner side of the conical spring, a connecting pipe (434) is movably clamped on the lower side of the conical spring (433), and the outer side of the connecting pipe (434) is in threaded connection with the inner wall of the limiting shell (432). The outer surface of the outer groove of the first annular cylinder (41) is in rolling connection with the inner wall of the rolling mechanism (3), the rolling mechanism (3) comprises a plurality of cylindrical rollers (31), and a plurality of limiting plates (32) are in rolling clamping connection with the outer sides of the cylindrical rollers (31); one side of one limiting plate (32) is rotationally connected with a first connecting plate (33) and a second connecting plate (34), the middle part of the first connecting plate (33) is rotationally connected with a center rod (35), and the outer surface of the center rod (35) is rotationally connected with the middle part of the second connecting plate (34); wherein two adjacent limiting plates (32) are movably connected through a first connecting plate (33), a second connecting plate (34) and a central rod (35), and the curvatures of the first connecting plate (33) and the second connecting plate (34) are consistent with the curvatures of the limiting plates (32); the outer sides of the cylindrical rollers (31) are provided with a plurality of arc plates (26), the middle parts of the outer sides of the arc plates (26) are fixedly connected with lower connecting plate frames (29), and four groups of bevel arms (211) are respectively and rotatably connected to the periphery of the upper side of each lower connecting plate frame (29); the upper ends of the four groups of bevel arms (211) are rotatably connected with an upper connecting plate frame (28), the inner threads of the middle rod parts of the four groups of bevel arms (211) are connected with two groups of threaded steel rods (210) and two groups of lateral threaded rods (214), and one ends of the two groups of threaded steel rods (210) are respectively rotatably connected with two sides of a mounting ring (215); the inside of the other two sides of the mounting ring (215) is respectively and rotatably connected with one ends of two groups of lateral threaded rods (214), one end of one threaded steel rod (210) is fixedly provided with a driving bevel gear (212), one end of the two groups of lateral threaded rods (214) is respectively and fixedly provided with two groups of driven bevel gears (213), and the outer sides of the driving bevel gears (212) are in meshed connection with the outer sides of the two groups of driven bevel gears (213); the other ends of the two groups of threaded steel rods (210) are fixedly clamped with two groups of connecting columns (27), one end of one connecting column (27) is fixedly provided with a gear (25), the outer surfaces of the two connecting columns (27) are movably clamped with the inner wall of the runway groove (5), and one side of the outer supporting ring (1) is fixedly connected with a ring track (24); the outside rotation joint of ring track (24) has empty slot ring (23), the opposite side fixedly connected with ring shell (22) of empty slot ring (23), the inboard fixedly connected with of ring shell (22) a plurality of gradual change rack (21), a plurality of gradual change rack (21) with empty slot ring (23) are located the coplanar, a plurality of the inboard of gradual change rack (21) is connected with the outside meshing of a plurality of gear (25).

2. The self-lubricating buffering gap-adjusting high-precision bearing for industrial robots according to claim 1, wherein the bearing is characterized in that: the lower ends of the connecting pipes (434) are movably clamped with the upper sides of the inner walls of the liquid separating tanks (44), the structure of the second annular column body (46) is consistent with that of the first annular column body (41), and one side of the first annular column body (41) is fixedly connected with one side of the second annular column body (46) through bolts.