CN111550492B

CN111550492B - Oil-containing bearing assembly and assembling device thereof

Info

Publication number: CN111550492B
Application number: CN202010416702.3A
Authority: CN
Inventors: 陈富
Original assignee: Chongqing Heda Technology Co ltd
Current assignee: Chongqing Heda Technology Co ltd
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2021-02-09
Anticipated expiration: 2040-05-15
Also published as: CN111550492A

Abstract

The invention discloses an oil-containing bearing assembly and an assembling device thereof, wherein the oil-containing bearing assembly comprises a bearing sleeve and a bearing, the bearing comprises an inner layer section and an outer layer section connected with the outer surface of the inner layer section, and the porosity of the outer layer section is greater than that of the inner layer section; the outer layer section is provided with a plurality of axial through holes which are annularly arranged along the outer layer section, the axial through holes axially penetrate through two end parts of the outer layer section, the outer layer section is also provided with radial through holes which are communicated with one end parts of the axial through holes, and the radial through holes radially penetrate through the outer surface of the outer layer section; the axial through hole is internally provided with filter cotton; the assembling device is used for assembling the oil bearing assembly. The oil-containing bearing assembly can effectively prolong the service life of the oil-containing bearing and relieve the noise problem. The assembling device can adjust the relative circumferential positions of the bearing sleeve and the bearing according to requirements and assemble the bearing sleeve and the bearing, and has the advantages of ingenious structure, simplicity in operation and stability in operation.

Description

Oil-containing bearing assembly and assembling device thereof

Technical Field

The invention belongs to the technical field of bearings, and particularly relates to an oil-bearing assembly and an assembling device thereof.

Background

The oil-retaining bearing is generally prepared by adopting a powder metallurgy process, and the sintered bearing has certain porosity inside, so that the oil-retaining bearing can ensure enough oil-retaining self-lubricating property. The oil-containing bearing is ideally lubricated in a hydrodynamic oil film lubrication state, and particularly, when the rotating shaft is static, lubricating oil is filled in the pores of the bearing; when the rotating shaft starts to run, the temperature is gradually increased through the mutual friction between the rotating shaft and the oil-containing bearing, and then the lubricating oil in the pores of the bearing gradually reduces the viscosity of the lubricating oil and seeps out of the pores to play a role in lubrication; when the rotating shaft runs at high speed, negative pressure is formed between the rotating shaft and the oil-containing bearing, and the lubricating oil is sucked out to form an oil film so as to reduce the friction between the rotating shaft and the oil-containing bearing.

In practical application, the existing oil-containing bearing is very easy to generate noise after running for a period of time, and the analysis reasons are as follows: 1. after long-time use, lubricating oil has certain loss (leakage, volatilization and other reasons), and an oil film formed by operation has a tendency of seeping back into pores of the oil-retaining bearing under the action of self weight, so that the bearing capacity of the oil film is reduced, and the contact of a friction pair between a rotating shaft and the oil-retaining bearing is influenced. 2. After long-term use, impurities such as dust and the like are brought into the area where the oil-containing bearing is located in the driving device, and after the impurities are mixed with lubricating oil in pores, the impurities are easily abraded or oil passages on the bearing are easily blocked.

Disclosure of Invention

In view of the above-mentioned deficiencies of the prior art, the oil-impregnated bearing assembly of the present invention solves the following technical problems: how to prolong the service life of the oil-retaining bearing and relieve the noise problem; the technical problem to be solved by the assembling device for the oil-containing bearing assembly is as follows: how to assemble the oil bearing assembly according to the invention according to a predetermined relative circumferential position.

In order to solve the technical problems, the invention adopts the following technical scheme:

an oil-containing bearing assembly comprises a bearing sleeve and a bearing, wherein the bearing comprises an inner layer section and an outer layer section connected to the outer surface of the inner layer section, and the porosity of the outer layer section is greater than that of the inner layer section;

the outer layer section is provided with a plurality of axial through holes which are annularly arranged along the outer layer section, the axial through holes axially penetrate through two end parts of the outer layer section, the outer layer section is also provided with radial through holes which are communicated with one end parts of the axial through holes, the radial through holes radially penetrate through the outer surface of the outer layer section, and the axial through holes and the radial through holes communicated with the axial through holes jointly enable the outer layer section to be provided with elastic plate sections;

the axial port is internally provided with filter cotton.

In application, the larger porosity can meet the requirement of sufficient oil supply capacity, but simultaneously, the larger porosity also easily enables oil between the bearing and the rotating shaft to permeate back into the pores of the bearing. Therefore, the balance between the self-lubricating performance and the oil film bearing performance is improved by adopting a multi-layer design. Specifically, the large pores of the outer layer can carry more oil, and in the operation process, the large pores can also absorb more oil under the action of negative pressure, and after lubricating oil forms an oil film between the bearing and the rotating shaft, the small pores of the inner layer can reduce the back-osmosis force of the oil film, so that the lubricating performance of the bearing is ensured.

In actual production, in order to avoid the fine scraps from blocking the pores, the working surface (inner layer segment) of the finished product of the oiliness bearing should be cut as little as possible. For this purpose, the invention selects to open axial through holes and radial through holes on the outer layer section, and filter cotton is installed in the axial through holes. When the impurities brought by the outside are attached to the bearing and flow to the inner layer section from the outer layer section along with the lubricating oil in a pore-forming manner, the impurities can be filtered by the filter cotton, so that the probability of blocking the inner layer section of the small pore-forming section is reduced, and the lubricating performance of the bearing is further ensured.

Wherein, the setting of radial opening not only can be convenient for assemble the filter pulp, still can abdicate in order to guarantee that the elastic plate section can compress tightly the filter pulp when the exogenic action elastic plate section.

Furthermore, the bearing sleeve comprises a bearing sleeve body, and the bearing sleeve body is provided with a connecting inner ring and a connecting outer ring positioned on the periphery of the connecting inner ring;

the inner wall surface of the connecting inner ring is provided with a plurality of clamping bulges which can be respectively matched with the elastic plate sections in a clamping way.

According to the invention, the connecting inner ring is used for mounting the bearing, and the bearing can be fixed by matching the inner surface of the connecting inner ring with the outer surface of the outer layer section; the bearing can be further positioned through the matching of the clamping bulge and the elastic plate section; meanwhile, the filter cotton can be tightly pressed in the axial through hole through the elastic plate section, so that the filter cotton can be prevented from accidentally moving to influence the filtering performance.

When the oil-retaining bearing is applied, the bearing sleeve is used for being connected with other parts so as to support the oil-retaining bearing.

Further, the radial thickness of the clamping protrusions is gradually increased along the circumferential direction of the connecting inner ring.

According to the invention, the pressing force of the elastic plate section can be adjusted by changing the relative circumferential position between the bearing sleeve and the bearing, so that the universal bearing has better universality. Specifically, when the area with the largest radial thickness of the clamping bulge is closer to the radial through hole, the pressing force on the elastic plate section is smaller; conversely, the larger the size. So that the setting can be carried out according to the requirements.

An assembly apparatus for an oil-impregnated bearing assembly includes a support platform;

a bearing sleeve supporting frame is arranged on the supporting platform, and a fixed cylinder is vertically arranged on the bearing sleeve supporting frame;

the fixed cylinder is connected with a bearing sleeve rotating cylinder which is positioned at the periphery of the fixed cylinder and can rotate relative to the fixed cylinder through a connecting piece in the rotating cylinder, the outer surface of the upper end part of the bearing sleeve rotating cylinder is provided with a plurality of clamping positioning grooves which can be respectively matched with the plurality of clamping bulges in a putting way, the upper end part of the bearing sleeve rotating cylinder is also connected with a bearing sleeve supporting plate which is connected to the bottom end of the clamping positioning grooves and can support the bearing sleeve, the bearing sleeve supporting plate is provided with a plurality of upper top through holes which penetrate through the upper end and the lower end of the bearing sleeve supporting plate, and the bearing sleeve supporting frame is also provided with a rotating;

be connected with through the movable rod elastic component on the solid fixed cylinder and be located solid fixed cylinder and the movable rod that can reciprocate relatively, the upper end of movable rod is connected with through the bearing connecting piece and can be relatively movable rod pivoted bearing sleeve, and the movable rod elastic component acts on the movable rod for: the upper end part of the movable rod penetrates through the top opening of the fixed cylinder, the bearing sleeve and the bearing sleeve rotating cylinder are arranged at intervals, the bottom end of the bearing sleeve extends to the periphery to form a bearing supporting section, and the outer diameter of the bearing supporting section is smaller than the inner diameter of the connecting inner ring and larger than the inner diameter of the inner layer section;

still be provided with on the bearing housing support frame and push up drive assembly, the output that pushes up drive assembly is connected with the roof-rack, go up the roof-rack have a plurality of respectively with a plurality of go up the last head-stock that the opening corresponds of pushing up, go up a drive assembly and act on the roof-rack for: the upper top piece can penetrate through the upper top through opening and move up and down relative to the upper top through opening;

still be provided with bearing mobile drive device on the supporting platform, bearing mobile drive device's output is connected with bearing mobile connection frame, is provided with bearing rotation drive device on the bearing mobile connection frame, and bearing rotation drive device's output is connected with bearing rotating assembly, and bearing rotation drive device acts on bearing rotating assembly for: the bearing rotating assembly can rotate relative to the fixed cylinder and comprises a rotating acting piece, and a plurality of rotating claw hand assemblies which can be respectively placed into the radial through holes in a matched mode are arranged on the rotating acting piece.

When the bearing sleeve fixing device is applied, the bearing sleeve is firstly sleeved on the bearing sleeve rotating drum through a mechanical arm or manually, at the moment, the clamping protrusion is matched with the clamping positioning groove in an embedded mode, and the bearing sleeve is positioned on the bearing sleeve supporting disc; and then the bearing is sleeved on the bearing sleeve and positioned on the bearing supporting section through a mechanical arm or manually. And then the rotary drum driving device is started to drive the bearing sleeve rotary drum to rotate, and the bearing sleeve can be driven to rotate to adjust the circumferential position of the bearing sleeve through the matching of the clamping protrusions and the clamping positioning grooves. Meanwhile, the bearing moving driving device is started to move the bearing moving connecting frame downwards to a specific height, and in an ideal state, the rotating acting piece just contacts with the top end of the bearing, and the rotating claw hand assembly is just placed in the radial opening. However, when the bearing is placed, the circumferential position of the bearing is random, that is, the radial opening is most likely to be arranged in a circumferentially staggered manner with the rotary claw assembly, at this time, the rotary claw assembly can overcome the elastic supporting force of the movable rod elastic piece to abut against the top end of the bearing, then the bearing rotation driving device is started, so that the rotary acting piece rotates relative to the bearing, when the rotary claw assembly rotates to the radial opening, the movable rod elastic piece can reset the height position of the bearing sleeve, and the rotary claw assembly can be placed in fit with the radial opening, and at this time, the bearing can be rotated by the bearing rotation driving device to adjust the circumferential position of the bearing.

After the circumferential positions of the bearing sleeve and the bearing are adjusted, the upper ejection driving assembly is started to drive the upper ejection frame to move upwards quickly, at the moment, the upper ejection piece penetrates through the upper ejection opening to eject the bearing sleeve to a specific height position, meanwhile, the bearing movement driving device can be started to move the bearing downwards quickly to the specific height position, and therefore the bearing can be assembled on the bearing sleeve.

Furthermore, a rotating drum transmission gear which is linked with the bearing sleeve rotating drum is sleeved on the bearing sleeve rotating drum;

the rotary drum driving device comprises a rotary drum driving cylinder, and the output end of the rotary drum driving cylinder is connected with a rotary drum transmission rack meshed with a rotary drum transmission gear.

In the invention, through the matching between the rotating drum transmission rack and the rotating drum transmission gear, the rotating transmission of the rotating drum without the bearing sleeve can be realized; the circumferential position of the bearing sleeve rotating cylinder can be locked, and the bearing sleeve rotating cylinder is prevented from rotating accidentally.

Furthermore, a rack limiting slide rail is arranged on the bearing sleeve support frame;

and a rack limiting sliding block which can be in sliding fit with the rack limiting sliding rail is arranged on the rotary drum transmission rack.

According to the invention, the rack limiting slide rail is matched with the rack limiting slide block, so that the moving stability of the transmission rack of the rotary drum can be improved.

Furthermore, the rotating claw hand assembly comprises a rotating fixed rod arranged on the rotating acting element and a rotating claw hand sleeved at the lower end part of the rotating fixed rod;

a buffer strip-shaped opening is formed in the rotary fixing rod and penetrates through two side walls of the rotary fixing rod, a rotary transmission pin is arranged in the buffer strip-shaped opening in a penetrating manner, and two ends of the rotary transmission pin are connected with the inner wall of the rotary claw;

still be provided with buffering elastic component in the buffering bar opening, buffering elastic component acts on and rotates the driving pin for: the rotary driving pin is connected with the bottom end of the buffer strip-shaped opening in an abutting mode.

When the movable bearing moves the connecting frame to a specific height and the radial opening and the rotary claw are in a staggered state in the circumferential direction, the rotary claw can overcome the elastic supporting force of the buffering elastic piece and abut against the top end of the bearing. And then starting the bearing rotation driving device to enable the rotation acting element to rotate relative to the bearing, when the rotation claw rotates to the radial opening, the buffering elastic element can reset the height position of the rotation claw to enable the rotation claw to be placed in the radial opening, and at the moment, the bearing rotation driving device can rotate the bearing to adjust the circumferential position of the rotation claw.

In the invention, through the arrangement of the buffering elastic piece, the elastic load of the elastic piece of the movable rod can be lightened, and the movable rod can be prevented from moving up and down in a larger range.

Further, the bearing rotating assembly further comprises a rotating connecting cylinder, and the rotating acting piece is buckled at the bottom end of the rotating connecting cylinder.

In the invention, the rotary claw assembly belongs to a consumable product, and the rotary acting piece can be conveniently replaced by detachably designing the rotary claw assembly.

Furthermore, a plurality of upper top guide rods which penetrate through the upper top frame and are in sliding fit with the upper top frame are arranged on the bearing sleeve support frame;

and the top end of the upper ejection guide rod is provided with a ball which is in rolling fit with the bottom end of the bearing sleeve supporting plate.

According to the invention, on one hand, the upper jacking guide rod can limit the up-and-down movement of the upper jacking frame, so that the accidental deviation of the upper jacking frame is avoided; on the other hand, the upper fixed guide rod can also support the bearing sleeve supporting disc in a relatively movable mode. The ball can reduce the relative rotation between the bearing sleeve supporting plate and the upper ejection guide rod.

In order to improve the stability of the movable rod and further improve the stability of the bearing positioning. Furthermore, the lower end part of the movable rod penetrates through the bottom opening of the fixed cylinder and is connected to the bearing sleeve support frame through a movable rod connecting piece; the lower end part of the movable rod is also provided with a movable rod limiting part which can be matched with the bearing sleeve supporting frame.

According to the invention, through the arrangement of the limiting part of the movable rod, the movable rod can be prevented from excessively moving and being abraded with the bearing sleeve rotary drum.

The invention has the following beneficial effects:

1. in the oil bearing assembly, a multi-layer design is adopted to improve the balance between the self-lubricating performance and the oil film bearing performance. Specifically, the large pore space of the outer layer section can meet the requirement of sufficient oil supply capacity, and after the lubricating oil forms an oil film between the bearing and the rotating shaft, the small pore space of the inner layer section can reduce the back-seepage force of the oil film, so that the lubricating performance of the bearing is ensured.

2. In the oil-containing bearing assembly, the outer layer section is provided with an axial through hole and a radial through hole, and filter cotton is arranged in the axial through hole. When the impurities brought by the outside are attached to the bearing and flow to the inner layer section from the outer layer section along with the lubricating oil in a pore-forming manner, the impurities can be filtered by the filter cotton, so that the probability of blocking the inner layer section of the small pore-forming section is reduced, and the lubricating performance of the bearing is further ensured.

3. In the assembling device for the oil-retaining bearing assembly, the bearing sleeve can be positioned by arranging the bearing sleeve rotating cylinder, and the circumferential position of the bearing sleeve can be adjusted and locked by matching the rotating cylinder driving device with the bearing sleeve rotating cylinder; the bearing sleeve can be used for positioning the bearing, and the circumferential position of the bearing can be adjusted and locked by matching the rotating acting piece with the bearing sleeve; the bearing and the bearing sleeve can be assembled through the matching between the upper jacking driving assembly and the bearing moving driving device.

Drawings

FIG. 1 is a schematic structural view of an embodiment of an oil bearing assembly according to the present invention;

FIG. 2 is a schematic structural view of one embodiment of a bearing in an oil-impregnated bearing assembly according to the present invention;

FIG. 3 is a schematic structural view of one embodiment of a bearing in an oil-impregnated bearing assembly according to the present invention;

FIG. 4 is a schematic structural view of an embodiment of an oil bearing assembly mounting apparatus according to the present invention;

FIG. 5 is a schematic structural view of one embodiment of a bearing sleeve barrel in an oil bearing assembly mounting apparatus according to the present invention;

FIG. 6 is a schematic structural view of one embodiment of a bearing rotation driving means and a bearing movement driving means in an oil bearing assembly mounting apparatus according to the present invention;

FIG. 7 is a schematic structural view of one embodiment of a rotating gripper assembly of an oil bearing assembly mounting apparatus according to the present invention;

FIG. 8 is a schematic structural view of an embodiment of a rotating retaining rod in an oil bearing assembly mounting apparatus according to the present invention;

fig. 9 is a schematic structural view of an embodiment of a transmission rack of a rotary drum in an oil bearing assembly assembling apparatus according to the present invention.

Reference numbers and corresponding part names in the drawings: 1. bearing sleeve, 2, bearing, 3, inner layer section, 4, outer layer section, 5, axial through hole, 6, radial through hole, 7, filter cotton, 8, connecting inner ring, 9, connecting outer ring, 10, clamping bulge, 11, elastic plate section, 12, supporting platform, 13, bearing sleeve supporting frame, 14, bearing moving connecting frame, 15, fixed cylinder, 16, rotating cylinder inner connecting piece, 17, bearing sleeve rotating cylinder, 18, clamping positioning groove, 19, bearing sleeve supporting plate, 20, movable rod elastic piece, 21, movable rod, 22, bearing connecting piece, 23, bearing sleeve, 24, bearing supporting section, 25, upper top through hole, 26, upper top frame, 27, upper top piece, 28, bearing rotating driving device, 29, rotating acting piece, 30, rotating claw, 31, rotating cylinder, 32, rotating cylinder driving cylinder, 33, rotating cylinder rack, 34, rack limiting slide rail, 35. rack spacing slider, 36, rotation fixed rod, 37, buffering bar-shaped opening, 38, rotation driving pin, 39, rotation connecting cylinder, 40, buffering elastic component, 41, upward pushing guide bar, 42, ball, 43, movable rod connecting piece, 44, movable rod locating part, 45, reinforcing rib, 46, bearing movement driving device, 47, upward pushing driving device, 48, bearing sleeve positioning ring, 49, adsorption blind hole, 50, adsorption through hole, 51, butt ring, 52, rotary cylinder external connecting piece, 53, entering section, 54, upward pushing frame through hole, 55, bearing support frame.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1

As shown in fig. 1 to 3, an oil-impregnated bearing assembly includes a bearing housing 1 and a bearing 2;

the bearing 2 comprises an inner layer section 3 and an outer layer section 4 jointed on the outer surface of the inner layer section 3, and the porosity of the outer layer section 4 is greater than that of the inner layer section 3;

the outer layer section 4 is provided with a plurality of axial through holes 5 which are annularly arranged along the outer layer section 4, the axial through holes 5 axially penetrate through two end parts of the outer layer section 4, the outer layer section 4 is also provided with radial through holes 6 which are communicated with one end part of the axial through holes 5, the radial through holes 6 radially penetrate through the outer surface of the outer layer section 4, and the axial through holes 5 and the radial through holes 6 communicated with the axial through holes jointly enable the outer layer section 4 to be provided with elastic plate sections 11;

the axial through opening 5 is internally provided with filter cotton 7.

In this embodiment, the porosity of the inner layer section 3 may be selected to be 10% and the porosity of the outer layer section 4 may be selected to be 20%. The ratio of the radial thickness of the outer layer section 4 to the radial thickness of the inner layer section 3 may be 2: 1. The radial thickness of the elastic plate section 11 is sufficient for elastic deformation. The filter cotton 7 can be made of a material which can absorb dust and penetrate oil in the prior art, and is not described herein again. The number of the axial through openings 5 can be four, the axial through openings 5 can be designed to be arc-shaped and matched with the outer layer section 4, and correspondingly, the elastic plate section 11 is also arc-shaped plate-shaped. After the axial through opening and the radial through opening are machined, the bearing 2 is cleaned and soaked, and then the filter cotton 7 is assembled.

Example 2

This example is further defined on the basis of example 1 as follows: the bearing sleeve 1 comprises a bearing sleeve body, and the bearing sleeve body is provided with a connecting inner ring 8 and a connecting outer ring 9 positioned on the periphery of the connecting inner ring 8;

the inner wall surface of the connecting inner ring 8 is provided with a plurality of clamping bulges 10 which can be respectively matched with a plurality of elastic plate sections 11 in a clamping way.

In this embodiment, for the stability of being connected between improvement connection inner circle 8 and the bearing 2, can be provided with a plurality of strengthening rib 45 between connecting outer lane 9 and being connected inner circle 8, strengthening rib 45 can set up in the region that corresponds the protruding 10 of chucking, so, when can avoiding the assembly, connect inner circle 8 and take place to expand deformation and influence the stability of bearing 2.

Example 3

This example is further defined on the basis of example 2 as follows: the radial thickness of the clamping protrusions 10 is gradually increased along the circumferential direction of the connecting inner ring 8.

In this embodiment, the inner side surface of the connecting inner ring 8 may be an arc surface adapted to the outer surface of the elastic plate section 11.

Example 4

As shown in fig. 1 to 9, a mounting apparatus for an oil-impregnated bearing assembly includes a support platform 12;

a bearing sleeve support frame 13 is arranged on the support platform 12, and a fixed cylinder 15 is vertically arranged on the bearing sleeve support frame 13;

the fixed cylinder 15 is connected with a bearing sleeve rotating cylinder 17 which is positioned at the periphery of the fixed cylinder 15 and can rotate relative to the fixed cylinder 15 through a rotating cylinder inner connecting piece 16, the outer surface of the upper end part of the bearing sleeve rotating cylinder 17 is provided with a plurality of clamping and positioning grooves 18 which can be respectively matched with a plurality of clamping bulges 10 in an embedding way, the upper end part of the bearing sleeve rotating cylinder 17 is also connected with a bearing sleeve supporting disc 19 which is connected to the bottom end of the clamping and positioning grooves 18 and can support the bearing sleeve 1, the bearing sleeve supporting disc 19 is provided with a plurality of upper top through holes 25 which penetrate through the upper end and the lower end of the bearing sleeve supporting disc 19, and a rotating cylinder driving device for driving the bearing sleeve rotating;

be connected with through the movable rod elastic component 20 on the fixed section of thick bamboo 15 and be located fixed section of thick bamboo 15 and the movable rod 21 that can reciprocate relatively fixed section of thick bamboo 15, the upper end of movable rod 15 is connected with through bearing connecting piece 22 can be relatively movable rod 15 pivoted bearing sleeve 23, and movable rod elastic component 20 acts on movable rod 21 for: the upper end of the movable rod 21 passes through the top opening of the fixed cylinder 15, the bearing sleeve 23 and the bearing sleeve rotating cylinder 17 are arranged at intervals, the bottom end of the bearing sleeve 23 extends to the periphery to form a bearing support section 24, and the outer diameter of the bearing support section 24 is smaller than the inner diameter of the connecting inner ring 8 and larger than the inner diameter of the inner layer section 3;

still be provided with on the bearing housing support frame 13 and push up drive assembly, the output that pushes up drive assembly is connected with upper frame 26, upper frame 26 have a plurality of respectively with a plurality of go up the last head 27 that the opening 25 corresponds of top, go up the drive assembly that pushes up and act on upper frame 26 for: the upper top piece 27 can pass through the upper top through opening 25 and move up and down relative to the upper top through opening 25;

still be provided with bearing movement drive device on supporting platform 12, bearing movement drive device's output is connected with bearing and removes link 14, is provided with bearing rotation drive device 28 on the bearing movement link 14, and bearing rotation drive device 28's output is connected with bearing rotating assembly, and bearing rotation drive device 28 acts on bearing rotating assembly for: the bearing rotating assembly can rotate relative to the fixed cylinder 15 and comprises a rotating acting piece 29, and a plurality of rotating claw hand assemblies which can be respectively matched with the radial through holes 6 are arranged on the rotating acting piece 29.

In this embodiment, the top drive assembly may include two top drives 47 spaced apart from each other. The bearing moving drive device 46 and the jacking drive device 47 can be air cylinders. The bearing rotation drive 28 may alternatively be an electric motor.

The bearing sleeve support disk 19 can also be provided with a bearing sleeve positioning ring 48, and the region between the bearing sleeve positioning ring 48 and the bearing sleeve drum 17 is the positioning region of the bearing sleeve 1. The bearing housing support plate 19 may be provided with four upper ejection openings 25, the four upper ejection openings 25 being evenly distributed in the aforementioned positioning area. Accordingly, four upper headers 27 are also provided.

For the stability of improving the contact of last top member 27 and bearing housing 1, can set up absorption blind hole 49 in the top portion of last top member 27, set up on the lateral wall of last top member 27 and adsorb the through-hole 50 with adsorbing the through-hole 49 intercommunication, it has vacuum generator to adsorb through-hole 50 intercommunication, when bearing housing 1 is pushed up to go up, start vacuum generator earlier for form the negative pressure in adsorbing blind hole 49 and adsorb bearing housing 1, start the drive assembly that pushes up again and in order to assemble bearing 2. In the top-up operation, the bearing sleeve 1 can be prevented from jumping.

When the rotary gripper assembly abuts against the top end of the bearing 2, in order to prevent the rotation of the rotary gripper from driving the bearing 2 to rotate, the bottom end of the rotary gripper assembly can be formed into a semi-sphere shape. In this way, the contact area between the rotating gripper assembly and the bearing 2 can be reduced.

To support the movable bar 21 by the movable bar elastic member 20, an abutment ring 51 may be provided on the movable bar 21.

To improve the stability of the rotation of the bearing housing 17, the bearing housing 17 can also be connected to the bearing housing support 13 by means of a rotor outer connection 52. The outer drum connector 52, the inner drum connector 16 and the bearing connector 22 can be rolling bearings. The movable rod elastic member 20 may be a compression spring having a strong elastic supporting force.

To achieve the up and down movement of the upper head frame 26 relative to the bearing housing support plate 19, an upper head frame opening 54 is formed in the middle of the upper head frame 26 to allow for the position of the bearing housing drum 17.

The bearing movement drive 46 may be disposed on the support platform by a bearing support bracket 55.

During assembly, in order to facilitate the bearing 1 to enter the connecting inner ring of the bearing sleeve 2, the radial thickness of the entering section area in the clamping bulge 10 can be gradually reduced from the direction close to the connecting inner ring.

Example 5

This example is further defined on the basis of example 4 as follows: the bearing sleeve rotary drum 17 is sleeved with a rotary drum transmission gear 31 which is interlocked with the bearing sleeve rotary drum 17;

the drum driving device comprises a drum driving cylinder 32, and the output end of the drum driving cylinder 32 is connected with a drum transmission rack 33 meshed with the drum transmission gear 31.

Preferably, a rack limit slide rail 34 is arranged on the bearing sleeve support frame 13;

and a rack limiting sliding block 35 which can be in sliding fit with the rack limiting sliding rail 34 is arranged on the rotary drum transmission rack 33.

Example 6

This example is further defined on the basis of example 4 as follows: the rotary claw assembly comprises a rotary fixing rod 36 arranged on the rotary acting element 29 and a rotary claw 30 sleeved at the lower end part of the rotary fixing rod 36;

a buffer strip-shaped opening 37 is formed in the rotary fixing rod 36, the buffer strip-shaped opening 37 penetrates through two side walls of the rotary fixing rod 36, a rotary transmission pin 38 penetrates through the buffer strip-shaped opening 37, and two ends of the rotary transmission pin 38 are connected with the inner wall of the rotary claw 30;

a buffer elastic member 40 is further arranged in the buffer strip-shaped opening 37, and the buffer elastic member 40 acts on the rotating transmission pin 38, so that: the rotation driving pin 38 abuts on the bottom end of the buffer strip-shaped opening 37.

In this embodiment, the buffer elastic member 40 may be a compression spring having a weaker elastic supporting force than the movable rod elastic member 20.

Preferably, the bearing rotating assembly further comprises a rotating connecting cylinder 39, and the rotating acting member 29 is buckled at the bottom end of the rotating connecting cylinder 39.

Example 7

This example is further defined on the basis of example 4 as follows: the bearing sleeve support frame 13 is provided with a plurality of upper top guide rods 41 which penetrate through the upper top frame 26 and are in sliding fit with the upper top frame 26;

the top end of the upper top guide rod 41 is provided with a ball 42 which is in rolling fit with the bottom end of the bearing sleeve supporting plate 19.

In this embodiment, the bearing housing supporting plate 19 may be provided with a linear bearing which is sleeved on the upper ejection guide rod 41 and can be slidably matched with the upper ejection guide rod 41.

Example 8

This example is further defined on the basis of example 4 as follows: the lower end part of the movable rod 21 penetrates through the bottom end opening of the fixed cylinder 15 and is connected to the bearing sleeve support frame 13 through a movable rod connecting piece 43;

the lower end of the movable rod 21 is further provided with a movable rod limiting piece 44 which can be matched with the bearing sleeve support frame 13.

In this embodiment, the movable rod connection member 43 may be a linear bearing.

The above is only a preferred embodiment of the present invention, and it should be noted that several modifications and improvements made by those skilled in the art without departing from the technical solution should also be considered as falling within the scope of the claims.

Claims

1. An oil-retaining bearing assembly, including bearing housing (1) and bearing (2), characterized in that:

the bearing (2) comprises an inner layer section (3) and an outer layer section (4) jointed on the outer surface of the inner layer section (3), and the porosity of the outer layer section (4) is greater than that of the inner layer section (3);

the outer layer section (4) is provided with a plurality of axial through holes (5) which are annularly arranged along the outer layer section (4), the axial through holes (5) axially penetrate through two end parts of the outer layer section (4), the outer layer section (4) is also provided with radial through holes (6) which are communicated with one end part of the axial through holes (5), the radial through holes (6) radially penetrate through the outer surface of the outer layer section (4), and the axial through holes (5) and the radial through holes (6) communicated with the axial through holes jointly enable the outer layer section (4) to be provided with elastic plate sections (11);

the axial through opening (5) is internally provided with filter cotton (7);

the bearing sleeve (1) comprises a bearing sleeve body, and the bearing sleeve body is provided with a connecting inner ring (8) and a connecting outer ring (9) positioned at the periphery of the connecting inner ring (8);

the inner wall surface of the connecting inner ring (8) is provided with a plurality of clamping bulges (10) which can be respectively matched with a plurality of elastic plate sections (11) in a clamping way.

2. An oil-containing bearing assembly as claimed in claim 1, wherein: the radial thickness of the clamping protrusions (10) is gradually increased along the circumferential direction of the connecting inner ring (8).

3. A fitting device for an oil-impregnated bearing assembly according to any one of claims 1 to 2, characterized in that: comprising a support platform (12);

a bearing sleeve support frame (13) is arranged on the support platform (12), and a fixed cylinder (15) is vertically arranged on the bearing sleeve support frame (13);

the fixed cylinder (15) is connected with a bearing sleeve rotating cylinder (17) which is positioned at the periphery of the fixed cylinder (15) and can rotate relative to the fixed cylinder (15) through a rotating cylinder inner connecting piece (16), the outer surface of the upper end part of the bearing sleeve rotating cylinder (17) is provided with a plurality of clamping positioning grooves (18) which can be respectively matched with the plurality of clamping bulges (10) in a putting way, the upper end part of the bearing sleeve rotating cylinder (17) is also connected with a bearing sleeve supporting plate (19) which is connected with the bottom end of the clamping positioning grooves (18) and can support the bearing sleeve (1), the bearing sleeve supporting plate (19) is provided with a plurality of upper top through holes (25) penetrating through the upper end and the lower end of the bearing sleeve supporting plate, and the bearing sleeve supporting frame (13) is also provided with a rotating cylinder driving device;

fixed section of thick bamboo (15) are gone up and are connected with movable rod (21) that are located fixed section of thick bamboo (15) and can reciprocate relatively fixed section of thick bamboo (15) through movable rod elastic component (20), and the upper end of movable rod (15) is connected with movable rod (15) pivoted bearing sleeve (23) relatively through bearing connecting piece (22), and movable rod elastic component (20) act on movable rod (21) for: the upper end part of the movable rod (21) penetrates through the top end opening of the fixed cylinder (15), the bearing sleeve (23) and the bearing sleeve rotating cylinder (17) are arranged at intervals, the bottom end of the bearing sleeve (23) extends to the periphery to form a bearing supporting section (24), and the outer diameter of the bearing supporting section (24) is smaller than the inner diameter of the connecting inner ring (8) and larger than the inner diameter of the inner layer section (3);

still be provided with on bearing housing support frame (13) and push up drive assembly, the output that pushes up drive assembly is connected with roof-rack (26), go up roof-rack (26) have a plurality of respectively with a plurality of go up last head part (27) that top opening (25) correspond, go up top drive assembly and act on roof-rack (26) for: the upper top piece (27) can penetrate through the upper top through hole (25) and move up and down relative to the upper top through hole (25);

still be provided with bearing movement drive device on supporting platform (12), bearing movement drive device's output is connected with bearing and removes link (14), is provided with bearing rotation drive device (28) on bearing movement link (14), and the output that bearing rotation drive device (28) was connected with bearing rotating assembly, and bearing rotation drive device (28) act on bearing rotating assembly for: the bearing rotating assembly can rotate relative to the fixed cylinder (15), the bearing rotating assembly comprises a rotating action piece (29), and a plurality of rotating claw hand assemblies which can be respectively matched with the plurality of radial through holes (6) are arranged on the rotating action piece (29).

4. The assembly apparatus for an oil-impregnated bearing assembly according to claim 3, wherein: the bearing sleeve rotating cylinder (17) is sleeved with a rotating cylinder transmission gear (31) which is interlocked with the bearing sleeve rotating cylinder;

the rotary drum driving device comprises a rotary drum driving cylinder (32), and the output end of the rotary drum driving cylinder (32) is connected with a rotary drum transmission rack (33) meshed with the rotary drum transmission gear (31).

5. The assembly apparatus for an oil-impregnated bearing assembly according to claim 4, wherein: a rack limiting slide rail (34) is arranged on the bearing sleeve support frame (13);

and a rack limiting sliding block (35) which can be in sliding fit with the rack limiting sliding rail (34) is arranged on the rotary drum transmission rack (33).

6. The assembly apparatus for an oil-impregnated bearing assembly according to claim 3, wherein: the rotary claw hand assembly comprises a rotary fixing rod (36) arranged on the rotary acting piece (29) and a rotary claw hand (30) sleeved at the lower end part of the rotary fixing rod (36);

a buffer strip-shaped opening (37) is formed in the rotary fixing rod (36), the buffer strip-shaped opening (37) penetrates through two side walls of the rotary fixing rod (36), a rotary transmission pin (38) penetrates through the buffer strip-shaped opening (37), and two ends of the rotary transmission pin (38) are connected with the inner wall of the rotary claw (30);

still be provided with buffering elastic component (40) in buffering strip-shaped opening (37), buffering elastic component (40) act on and rotate driving pin (38) for: the rotary driving pin (38) is abutted against the bottom end of the buffer strip-shaped opening (37).

7. The assembly apparatus for an oil-impregnated bearing assembly according to claim 6, wherein: the bearing rotating assembly further comprises a rotating connecting cylinder (39), and the rotating acting piece (29) is buckled at the bottom end of the rotating connecting cylinder (39).

8. The assembly apparatus for an oil-impregnated bearing assembly according to claim 3, wherein: the bearing sleeve support frame (13) is provided with a plurality of upper top guide rods (41) which penetrate through the upper top frame (26) and are in sliding fit with the upper top frame (26);

and the top end of the upper top guide rod (41) is provided with a ball (42) which is in rolling fit with the bottom end of the bearing sleeve supporting plate (19).

9. The assembly apparatus for an oil-impregnated bearing assembly according to claim 3, wherein: the lower end part of the movable rod (21) penetrates through the bottom end opening of the fixed cylinder (15) and is connected to the bearing sleeve support frame (13) through a movable rod connecting piece (43);

the lower end part of the movable rod (21) is also provided with a movable rod limiting part (44) which can be matched with the bearing sleeve supporting frame (13).