CN219510004U

CN219510004U - Oil mixing device, slewing bearing and working machine

Info

Publication number: CN219510004U
Application number: CN202320736428.7U
Authority: CN
Inventors: 宋铁; 范鑫; 姚业浩
Original assignee: Suote Transmission Equipment Co Ltd
Current assignee: Suote Transmission Equipment Co Ltd
Priority date: 2023-04-06
Filing date: 2023-04-06
Publication date: 2023-08-11
Anticipated expiration: 2033-04-06

Abstract

The utility model relates to the technical field of bearings, and provides an oil mixing device, a slewing bearing and a working machine. An oil mixing device comprising: the two ends of the support are provided with spherical grooves for placing the spheres; the axial flow impeller is rotatably arranged on the support, the axial direction of the axial flow impeller is arranged along the direction from one end to the other end of the support, and the axial flow impeller is used for stirring the lubricant in the roller path. The oil mixing device provided by the utility model has at least the following advantages: firstly, the lubricant in the roller path can be stirred so as to push the lubricant extruded by the ball back to the track of the contact point between the ball and the roller path, thereby ensuring the lubrication effect between the ball and the roller path. Secondly, the lubricant can flow on the surface of the roller path, so that the surface of the roller path is cooled, and the service lives of the roller path and the ball body are prevented from being influenced by high temperature. Thirdly, the lubricant can be uniformly adhered to the surfaces of the roller path and the ball body, so that the rust problem of the roller path and the ball body is avoided.

Description

Oil mixing device, slewing bearing and working machine

Technical Field

The utility model relates to the technical field of bearings, in particular to an oil mixing device, a slewing bearing and a working machine.

Background

The slewing bearing is used as a mechanical basic element, plays roles of connection and transmission, realizes the slewing function and is known as a mechanical joint. The slewing bearing is widely applied to various industries such as cranes, excavators, wind power, military, scientific research, medical treatment and the like.

The slewing bearing generally comprises an inner ring, an outer ring, balls and a spacer, wherein a rollaway nest is formed between the inner ring and the outer ring, the balls and the spacer are arranged in the rollaway nest, and the spacer is arranged between two adjacent balls. The inner ring or the outer ring is provided with a filling port for lubricant, and the lubricant can be filled through the filling port, so that friction force between the ball body and the roller path is reduced.

Since the ball is in point contact with the raceway, the rolling action during continuous rolling of the ball can squeeze the lubricant on the track of the contact point between the ball and the raceway to other parts of the raceway, so that the lubricant on the track of the contact point between the ball and the raceway is reduced, and the lubrication effect between the ball and the raceway is further affected.

Disclosure of Invention

The utility model provides an oil mixing device, a slewing bearing and an operation machine, which are used for solving the defect that in the prior art, the lubricant on the track of a contact point between a ball and a roller path is reduced due to continuous rolling of the ball, so that the friction effect between the ball and the roller path is affected, and the effect of uniformly distributing the lubricant in the roller path is realized.

The utility model provides an oil mixing device, which is used for being arranged between adjacent spheres in a rollaway nest of a slewing bearing, and comprises the following components:

the two ends of the support are provided with spherical grooves for placing the spheres;

the axial flow impeller is rotatably arranged on the support, the axial direction of the axial flow impeller is arranged along the direction from one end to the other end of the support, and the axial flow impeller is used for stirring the lubricant in the roller path.

According to the oil mixing device provided by the utility model, the axial flow impeller comprises a hub and blades, the hub is rotatably arranged on the support, the blades are spirally arranged on the outer wall of the hub, and the blades are used for stirring the lubricant in the roller path.

According to the oil mixing device provided by the utility model, the outer wall of the hub is provided with the spiral protruding blocks which are spirally arranged, and the blades are connected with the side walls of the spiral protruding blocks through the connecting pieces.

According to the oil mixing device provided by the utility model, the blades are flexible blades.

According to the oil mixing device provided by the utility model, the blades are rubber sheets, felt sheets, plastic sheets or brushes.

According to the oil mixing device provided by the utility model, the support comprises the supporting rod and a pair of supporting blocks, two ends of the supporting rod are respectively connected with the pair of supporting blocks, the axial flow impeller is sleeved on the supporting rod, the supporting blocks are used for axially limiting the axial flow impeller, and the spherical grooves are formed in one ends, far away from each other, of the pair of supporting blocks.

According to the oil mixing device provided by the utility model, two ends of the supporting rod are respectively in threaded connection or adhesion with a pair of supporting blocks;

or, one end of the supporting rod and one of the pair of supporting blocks are arranged into an integral structure, and the other end of the supporting rod is in threaded connection or adhesion with the other one of the pair of supporting blocks.

According to the oil mixing device provided by the utility model, the support is provided with the bulge, and the bulge is used for extending into the oil groove of the rollaway nest.

The utility model also provides a slewing bearing, which comprises an inner ring, an outer ring, a ball body and the oil mixing device, wherein a rollaway nest is formed between the inner ring and the outer ring, and the ball body is arranged in the rollaway nest.

The utility model also provides a working machine comprising a slewing bearing as described above.

The oil mixing device is arranged between adjacent spheres in the rollaway nest of the slewing bearing and is respectively matched with the two spheres through spherical grooves at two ends of the support. In the rotating process of the slewing bearing, the ball body pushes the oil mixing device to run along the roller path, and the lubricant in the roller path flows through the surface of the axial flow impeller and interacts with the axial flow impeller, so that the axial flow impeller is driven to rotate around the support. The axial flow impeller plays a role in stirring the lubricant in the rotating process, and the lubricant in the roller path can be uniformly coated on the surface of the roller path.

The oil mixing device provided by the utility model has at least the following advantages: firstly, the lubricant in the roller path can be stirred so as to push the lubricant extruded by the ball back to the track of the contact point between the ball and the roller path, thereby ensuring the lubrication effect between the ball and the roller path. Secondly, the lubricant can flow on the surface of the roller path, so that the surface of the roller path is cooled, and the service lives of the roller path and the ball body are prevented from being influenced by high temperature. Thirdly, the lubricant can be uniformly adhered to the surfaces of the roller path and the ball body, so that the rust problem of the roller path and the ball body is avoided. Fourth, through making axial flow impeller rotate for the support, because axial flow impeller is lighter for whole oil mixing device quality, consequently axial flow impeller rotates less required driving force, so the lubricant can drive axial flow impeller more easily and rotate for axial flow impeller has better rotation effect, and then makes axial flow impeller have better stirring effect.

The slewing bearing and the working machine provided by the utility model comprise the oil mixing device provided by the utility model, so that all the advantages of the oil mixing device are simultaneously contained.

Drawings

In order to more clearly illustrate the utility model or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of the construction of a slewing bearing provided in some embodiments of the present utility model;

FIG. 2 is an enlarged view of a portion of FIG. 1 at I provided in some embodiments of the utility model;

FIG. 3 is an enlarged view of a portion of the portion at II of FIG. 1 provided in some embodiments of the utility model;

FIG. 4 is a schematic diagram of an oil mixing apparatus according to some embodiments of the present utility model;

FIG. 5 is a side view of the oil mixing apparatus of FIG. 4 provided in some embodiments of the utility model;

FIG. 6 is a perspective view of the oil mixing apparatus of FIG. 5 provided in some embodiments of the present utility model;

FIG. 7 is a schematic illustration of the structure of a mount provided in some embodiments of the utility model;

fig. 8 is a schematic structural view of a hub provided in some embodiments of the present utility model.

Reference numerals:

1. an oil mixing device; 101. a support; 101-1, a supporting rod; 101-2, supporting blocks; 101-3, protrusions; 102. an axial flow impeller; 102-1, a hub; 102-2, blades; 103. a spherical groove; 2. a sphere; 3. an oil groove; 4. an inner ring; 5. an outer ring; 6. a raceway; 7. a mounting hole; 8. a blocking member; 9. a seal; 10. an oil filling port; 11. and a pin shaft.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the related art, a slewing bearing generally includes an inner ring, an outer ring, balls and spacers, between which a raceway is formed, the balls and spacers being both disposed in the raceway, the spacers being disposed between two adjacent balls. The inner ring or the outer ring is provided with a filling port for lubricant, and the lubricant can be filled through the filling port, so that friction force between the ball body and the roller path is reduced. Since the ball is in point contact with the raceway, the rolling action during continuous rolling of the ball can squeeze the lubricant on the track of the contact point between the ball and the raceway to other parts of the raceway, so that the lubricant on the track of the contact point between the ball and the raceway is reduced, and the lubrication effect between the ball and the raceway is further affected. In order to solve the problem that in the related art, the lubricant on the track of the contact point between the ball and the roller path is reduced due to continuous rolling of the ball, and the friction effect between the ball and the roller path is affected, the effect of uniformly distributing the lubricant in the roller path is achieved, and the oil mixing device, the slewing bearing and the working machine are provided in the embodiment of the utility model.

The oil mixing apparatus 1 provided in the embodiment of the present utility model is described below with reference to fig. 1 to 8.

Specifically, the oil mixing device 1 is used to be disposed between adjacent balls 2 in a raceway 6 of a slewing bearing. Wherein, optionally, the slewing bearing includes inner ring 4 and outer lane 5, and inner ring 4 and outer lane 5 are equipped with outer annular groove and inner ring groove respectively, and outer annular groove and inner ring groove butt joint form raceway 6, and spheroid 2 sets up in raceway 6, and spheroid 2 can set up as the steel ball. The oil mixing device 1 includes a support 101 and an axial flow impeller 102.

Wherein, both ends of the support 101 are provided with spherical grooves 103 into which the balls 2 are put. In use, the support 101 is disposed between two spheres 2, with portions of the spheres 2 being received in the spherical grooves 103. When the slewing bearing rotates, the ball 2 pushes the support 101 to run along the raceway 6.

The axial flow impeller 102 is rotatably mounted on the support 101, and the axial direction of the axial flow impeller 102 extends in the direction from one end to the other end of the support 101, that is, the axial direction of the axial flow impeller 102 extends in the length direction of the support 101. The longitudinal direction of the support 101 refers to the right-to-left or left-to-right direction in fig. 5. The axial flow impeller 102 serves to agitate the lubricant in the raceway 6. It can be understood that the lubricant can be driven to run along the axial direction of the axial flow impeller 102 when the axial flow impeller 102 rotates, and similarly, the lubricant can run along the axial direction relative to the axial flow impeller 102 when the oil mixing device 1 runs along the roller path 6, so that the axial flow impeller 102 can be driven to rotate, and the lubricant can be stirred when the axial flow impeller 102 rotates.

The operation principle of the oil mixing device 1 provided in the embodiment of the utility model is as follows: the oil mixing device 1 is arranged between adjacent spheres 2 in the rollaway nest 6 of the slewing bearing and is respectively matched with the two spheres 2 through spherical grooves 103 at two ends of the support 101. During the rotation of the slewing bearing, the ball 2 pushes the oil mixing device 1 to run along the raceway 6, and the lubricant in the raceway 6 flows through the surface of the axial flow impeller 102 and interacts with the axial flow impeller 102, so that the axial flow impeller 102 is driven to rotate around the support 101. The axial flow impeller 102 plays a role of stirring the lubricant in the process of rotating, and can uniformly coat the lubricant in the raceway 6 on the surface of the raceway 6.

So arranged, the oil mixing device 1 provided in the embodiment of the utility model has at least the following advantages: firstly, the lubricant in the roller path 6 can be stirred so as to push the lubricant extruded by the ball 2 back to the track of the contact point between the ball 2 and the roller path 6, thereby ensuring the lubrication effect between the ball 2 and the roller path 6. Secondly, the lubricant can flow on the surface of the roller path 6, so that the surface of the roller path 6 is cooled, and the service lives of the roller path 6 and the ball body 2 are prevented from being influenced by high temperature. Thirdly, the lubricant can be uniformly adhered to the surfaces of the roller path 6 and the ball body 2, so that the rust problem of the roller path 6 and the ball body 2 is avoided. Fourth, by rotating the axial flow impeller 102 with respect to the support 101, since the axial flow impeller 102 is lighter in weight with respect to the entire oil mixing apparatus 1, the driving force required for rotation of the axial flow impeller 102 is smaller, so that the lubricant can more easily drive the axial flow impeller 102 to rotate, so that the axial flow impeller 102 has a better rotation effect, and further, the axial flow impeller 102 has a better stirring effect.

In some embodiments provided by the present utility model, the axial flow impeller 102 includes a hub 102-1 and blades 102-2. Hub 102-1 is rotatably mounted on support 101 and blades 102-2 are helically disposed on the outer wall of hub 102-1, blades 102-2 serving to agitate the lubricant within raceway 6. So configured, the axial flow impeller 102 is simple in structure.

In some embodiments provided by the present utility model, blade 102-2 is a flexible blade. By the arrangement, the blade 102-2 is softer, so that the blade can be well attached to the inner wall of the roller path 6, and further, the lubricant can be uniformly coated on the inner wall of the roller path 6, and the coating effect of the blade 102-2 is improved.

Alternatively, blade 102-2 is a rubber sheet, felt sheet, plastic sheet, or brush. So configured, the blade 102-2 is simple in construction and low in cost.

In some embodiments of the present utility model, the outer wall of the hub 102-1 has a helically disposed helical projection thereon, and the blade 102-2 is connected to the side wall of the helical projection by a connector. Because the spiral protruding block is spirally arranged on the outer wall of the hub 102-1, and the blade 102-2 is a flexible blade, the side wall of the spiral protruding block of the blade 102-2 is connected through the connecting piece, so that the blade 102-2 can be attached to the side wall of the spiral protruding block, and the blade 102-2 also forms a spiral structure spirally arranged around the hub 102-1 under the guiding effect and the orthopedic effect of the spiral protruding block, so that the blade 102-2 can interact with the lubricant to rotate and finally achieve the effect of stirring the lubricant. By such arrangement, the blade 102-2 can be formed into a spiral structure by mounting the blade 102-2 on the hub 102-1, and the blade 102-2 does not need to be specially arranged into a spiral structure, so that the structure of the blade 102-2 can be simplified and the processing cost of the blade 102-2 can be reduced.

In some embodiments provided by the utility model, the connection is a threaded connection such as a screw. This arrangement enables the blade 102-2 to be removably coupled to the hub 102-1, thereby facilitating installation, removal, and replacement of the blade 102-2. Optionally, each blade 102-2 is connected to the spiral protrusion of the hub 102-1 through at least two threaded connectors, so that the blade 102-2 can better fit with the sidewall of the spiral protrusion, so as to ensure the spiral angle of the blade 102-2 and the connection strength of the blade 102-2 and the hub 102-1, and further ensure the stirring effect of the blade 102-2 on the lubricant.

In some embodiments provided by the present utility model, the stand 101 includes a support bar 101-1 and a pair of support blocks 101-2. Wherein, a pair of supporting blocks 101-2 are respectively connected at both ends of the supporting rod 101-1, the axial flow impeller 102 is sleeved on the supporting rod 101-1, the supporting blocks 101-2 are used for axially limiting the axial flow impeller 102, and the axial flow impeller 102 is prevented from falling out of the supporting rod 101-1. One end of the pair of support blocks 101-2, which are far from each other, is provided with a spherical groove 103.

By means of the arrangement, the supporting block 101-2 can limit the axial impeller 102 and can be provided with the spherical groove 103 to be matched with the sphere 2, so that the structure of the support 101 is simple and compact.

Referring to fig. 6, in some embodiments provided by the present utility model, one end of the supporting rod 101-1 is provided as a unitary structure with one of the two supporting blocks 101-2, and the other end of the supporting rod 101-1 is screw-coupled or adhered to the other supporting block 101-2. When the oil mixing apparatus 1 is assembled, the support rod 101-1 may be passed through the axial flow impeller 102 and then screwed or bonded to the support block 101-2. So set up, be convenient for assemble oil mixing device 1. Of course, the support rod 101-1 is not limited to being connected to the two support blocks 101-2 in the above-described manner, and for example, both ends of the support rod 101-1 may be connected to the two support blocks 101-2 by screw connection or bonding, etc.

In some embodiments of the utility model provided, the support 101 is provided with a protrusion 101-3, the protrusion 101-3 being adapted to extend into the oil groove 3 of the raceway 6. For example, the protrusion 101-3 may protrude from the outer circumferential wall of the supporting block 101-2. Referring to fig. 1-3, the raceways of the slewing bearing are typically each provided with an oil sump 3, the oil sump 3 being for retaining lubricant. So set up, in slewing bearing pivoted in-process, spheroid 2 promotes oil mixing device 1 and moves along raceway 6, and the in-process that oil mixing device 1 moved, the protruding 101-3 of support 101 slides along the oil groove 3 on the raceway 6 inner wall, can scrape out the lubricant in the oil groove 3, and the lubricant of being scraped out is stirred by the impeller and coated at the inner wall of raceway 6, plays lubricated spheroid 2's effect, avoids the lubricant in the oil groove 3 unable by make full use of just taking place ageing problem to the utilization ratio of lubricant in the raceway 6 has been improved.

Further, as shown in fig. 4, protrusions 101-3 are provided on both sides of the support 101, and the protrusions 101-3 on both sides extend into the oil grooves 3 on both sides of the raceway 6, respectively. Therefore, the lubricant in the oil grooves 3 at two sides of the rolling path 6 can be scraped out, and the utilization rate of the lubricant in the rolling path 6 is further improved. Alternatively, the protrusion 101-3 is provided on the outer wall of the supporting block 101-2.

The embodiment of the utility model also provides a slewing bearing.

Specifically, the slewing bearing comprises an inner ring 4, an outer ring 5, a ball 2 and the oil mixing device 1, a raceway 6 is formed between the inner ring 4 and the outer ring 5, and the ball 2 is arranged in the raceway 6. For example, the inner ring 4 and the outer ring 5 are respectively provided with an outer ring groove and an inner ring groove, the outer ring groove and the inner ring groove are butted to form a raceway 6, the ball 2 is arranged in the raceway 6, and the ball 2 can be arranged as a steel ball. Optionally, the inner wall of the outer ring groove comprises an oil groove 3 and arc-shaped sections arranged on two sides of the oil groove 3, wherein the diameters of the two arc-shaped sections are larger than the diameter of the sphere 2. The inner wall of the inner ring groove comprises an oil groove 3 and arc sections arranged on two sides of the oil groove 3, wherein the diameters of the two arc sections are both larger than the diameter of the sphere 2. From the above, the raceway 6 formed by the inner ring groove and the outer ring groove comprises four arc-shaped sections, and the ball 2 is arranged in the raceway 6 to be in point contact with the four arc-shaped sections respectively.

The present utility model provides a slewing bearing, which comprises the oil mixing device 1, so that all the advantages of the oil mixing device 1 are simultaneously included, and the description is omitted.

In some embodiments provided by the present utility model, either one of the inner ring 4 and the outer ring 5 is provided with an oil filling port 10, and the oil filling port 10 communicates with the oil groove 3 of the inner ring 4 or the oil groove 3 of the outer ring 5. By communicating the oil filling port 10 with the oil groove 3, the arrangement can avoid that the oil filling port 10 is arranged on the track of the contact point between the ball 2 and the roller path 6, thereby avoiding that the oil filling port 10 hinders the movement of the ball 2.

In some embodiments provided by the present utility model, the slewing bearing further comprises a closure member 8. The outer ring 5 is provided with mounting holes 7 communicating with the raceway 6, the mounting holes 7 being for the entry of at least one of the ball 2 or the oil mixing device 1 into the raceway 6, i.e. the installation of at least one of the ball 2 or the oil mixing device 1 into the raceway 6 through the mounting holes 7. The plugging piece 8 is used for opening and closing the mounting hole 7. Specifically, the end of the plugging piece 8 close to the raceway 6 is provided with an arc-shaped groove, the inner wall of the arc-shaped groove is flush with the inner wall of the raceway 6, namely, the end of the plugging piece 8 close to the raceway 6 is used for filling the recess formed by the mounting hole 7 on the inner wall of the raceway 6, so that the ball 2 can smoothly and stably pass through the position of the mounting hole 7. The blocking member 8 is connected to the outer ring 5 by a pin 11, for example, the pin 11 passes through a pin hole of the outer ring 5 and protrudes into a positioning hole of the blocking member 8. The pin 11 can prevent the blocking member 8 from rotating in the mounting hole 7 and prevent the blocking member 8 from being separated from the mounting hole 7.

In some embodiments provided by the present utility model, the slewing bearing further comprises a sealing element 9, and the seams at both ends of the inner ring 4 and the outer ring 5 are respectively sealed by the corresponding sealing element 9. As shown in fig. 3, the inner ring 4 or the outer ring 5 is provided with a mounting groove, the sealing member 9 is arranged in the mounting groove, the sealing member 9 is used for sealing a joint between the inner ring 4 and the outer ring 5, dust is prevented from entering the raceway 6, and meanwhile, the lubricant in the raceway 6 can be prevented from leaking.

The embodiment of the utility model also provides a working machine.

Specifically, the work machine includes the slewing bearing described above.

It should be noted that the work machine includes a slewing bearing, that is, includes all advantages of the slewing bearing, and will not be described herein.

Meanwhile, the work machine includes, but is not limited to, an excavator, a loader, and a crane.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. An oil mixing device for being arranged between adjacent balls (2) in a raceway (6) of a slewing bearing, comprising:

the two ends of the support (101) are provided with spherical grooves (103) into which the spheres (2) are placed;

an axial flow impeller (102) is rotatably mounted on the support (101), and the axial direction of the axial flow impeller (102) extends along the direction from one end to the other end of the support (101), and the axial flow impeller (102) is used for stirring the lubricant in the roller path (6).

2. The oil mixing device according to claim 1, wherein the axial flow impeller (102) comprises a hub (102-1) and blades (102-2), the hub (102-1) being rotatably mounted on the support (101), the blades (102-2) being helically arranged on an outer wall of the hub (102-1), the blades (102-2) being for stirring lubricant in the raceway (6).

3. An oil mixing device according to claim 2, wherein the outer wall of the hub (102-1) is provided with spiral protrusions arranged in a spiral manner, and the blades (102-2) are connected with the side walls of the spiral protrusions through connecting pieces.

4. An oil mixing device according to claim 2, wherein the blades (102-2) are flexible blades (102-2).

5. An oil mixing device according to claim 4, wherein the blade (102-2) is a rubber sheet, felt sheet, plastic sheet or brush.

6. The oil mixing device according to any one of claims 1-5, wherein the support (101) comprises a support rod (101-1) and a pair of support blocks (101-2), two ends of the support rod (101-1) are respectively connected with the pair of support blocks (101-2), the support rod (101-1) is sleeved with the axial flow impeller (102), the support blocks (101-2) are used for axially limiting the axial flow impeller (102), and the spherical grooves (103) are formed in one ends, away from each other, of the pair of support blocks (101-2).

7. The oil mixing device according to claim 6, wherein both ends of the supporting rod (101-1) are respectively screwed or bonded with a pair of the supporting blocks (101-2);

alternatively, one end of the supporting rod (101-1) is provided as an integral structure with one of the pair of supporting blocks (101-2), and the other end of the supporting rod (101-1) is screwed or bonded with the other of the pair of supporting blocks (101-2).

8. An oil mixing device according to any one of claims 1-5, wherein the support (101) is provided with protrusions (101-3), the protrusions (101-3) being adapted to extend into the oil grooves (3) of the raceway (6).

9. A slewing bearing, characterized by comprising an inner ring (4), an outer ring (5), a sphere (2) and an oil mixing device according to any one of claims 1-8, wherein a raceway (6) is formed between the inner ring (4) and the outer ring (5), and the sphere (2) is arranged in the raceway (6).

10. A work machine comprising the slewing bearing as set forth in claim 9.