A rolling bearing

Abstract

The present invention provides a rolling bearing, belonging to the technical field of bearings, comprising an inner ring, the inner ring being provided with grooves for rolling bodies to be embedded, rolling bodies, the rolling bodies comprising ball rollers and cylindrical rollers, a retaining frame, the retaining frame being provided with a plurality of ball limiting holes and cylindrical limiting holes in a ring array, and an outer ring, the outer ring being coaxial with the inner ring and arranged to slide and translate along the axial direction of the inner ring, during the sliding and translation process of the outer ring, a lubrication mechanism and a heat dissipation mechanism are arranged in the isolation area, so as to lubricate and dissipate heat for the rolling bearing, the present invention ingeniously combines the rotating bodies of the ball bearing and the cylindrical bearing, and performs targeted adjustment of the rolling body according to the load requirement of the roller shaft, so that the use of the bearing can effectively meet the working condition requirements, fully utilizes the characteristics of bearings with different rolling bodies, and further provides a working space for the lubrication and heat dissipation of the bearing, thereby further extending the service life of the bearing.

Description

Technical Field

[0001] The invention relates to the technical field of bearings, in particular to a rolling bearing. Background Art

[0002] A cylindrical ball bearing with publication number "CN214118739U" in the prior art comprises an inner ring and an outer ring, a first ball and a limit plate are respectively arranged between the outer ring and the inner ring, a through hole is opened on the limit plate, the first ball is located inside the through hole, a protective plate is arranged between the inner ring and the outer ring, a second ball is arranged between one end of the protective plate and the outer ring, a second ball is also arranged between the other end of the protective plate and the inner ring, an oil storage chamber is arranged inside the inner ring, and an oil outlet channel is opened at the bottom of the second groove. The above device can add lubricant to the inside of the bearing without disassembling the bearing, and the oiling process is simple and easy to operate, which reduces the workload and thus improves the work efficiency, can reduce the impact force on the first ball under the action of external force, plays a role in protecting the first ball, and improves the service life of the cylindrical ball bearing to a certain extent.

[0003] However, the cylindrical ball bearing mentioned above still has obvious defects during use: the bearings in the above-mentioned device and the prior art all use a single rolling element, such as a ball roller or a cylindrical roller. Since the application scenarios of the two are different, specific bearings need to be selected during the installation process according to different requirements of the roller. However, in the actual production process, the application scenarios of the roller are more complicated, and there is a demand for both ball or cylindrical rolling elements. The single rolling element method in the prior art is obviously difficult to meet the above requirements, thereby affecting the service life of the bearing. Summary of the invention

[0004] The object of the present invention is to provide a rolling bearing to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A rolling bearing, comprising:

[0007] An inner ring, wherein the inner ring is provided with grooves for the rolling bodies to be embedded, and the grooves include ball grooves and cylindrical grooves;

[0008] Rolling body, the rolling body includes a ball roller and a cylindrical roller, the ball roller and the cylindrical roller are embedded in the ball groove and the cylindrical groove respectively;

[0009] A cage, wherein a plurality of ball limiting holes and cylindrical limiting holes are formed in an annular array, wherein ball rollers or cylindrical rollers are embedded in the ball limiting holes and cylindrical limiting holes in a one-to-one correspondence, and the ball rollers and cylindrical rollers are respectively arranged on both sides of the cage in the axial direction; and,

[0010] The outer ring has a ball embedding groove and a cylindrical embedding groove respectively formed on the inner side thereof, which are matched with the ball roller and the cylindrical roller. The outer ring is coaxial with the inner ring and is arranged to slide and translate along the axial direction of the inner ring. During the sliding and translation process of the outer ring, the ball roller and the ball embedding groove, the cylindrical roller and the cylindrical embedding groove are in a matched state, and only one group is in a matched state; wherein,

[0011] The ball embedding groove and the cylindrical embedding groove on the inner side of the outer ring are separated to form an isolation zone, and the isolation zone is concave toward the side away from the inner ring so as to break away from the contact with the ball roller and the cylindrical roller. A lubrication mechanism and a heat dissipation mechanism are arranged in the isolation zone, and through the arrangement of the lubrication mechanism and the heat dissipation mechanism, the various components of the rolling bearing can be lubricated and cooled.

[0012] Preferably, the mechanism for driving the outer ring to slide and translate is a translation screw, which cooperates with the screw hole opened in the outer ring. There are multiple translation screws and screw holes corresponding to each other and distributed in a circular array. Several of the translation screws are fixedly connected to the driving shaft of the translation motor. The translation motor is fixedly installed in the sliding seat, and a translation groove for the outer ring to be embedded is opened on the inner side of the sliding seat.

[0013] Preferably, the retaining frame is composed of a main retaining frame and side retaining frames arranged on both sides of the main retaining frame to match the main retaining frame, and the side retaining frames on both sides are fastened to the main retaining frame by rivets.

[0014] Preferably, an annular adsorption magnet is also installed in the inner ring, and the ball roller and the cylindrical roller are adsorbed by the annular adsorption magnet so that the two do not lose the cooperation with the ball groove or the cylindrical groove during the translational sliding process of the outer ring.

[0015] Preferably, the lubrication mechanism for lubricating various components of the rolling bearing is a lubricating telescopic block, which is installed in a telescopic groove opened in the isolation area, and the lubricating telescopic block consists of an elastic telescopic cavity and a sponge smear layer installed at the end, and the elastic telescopic cavity is connected to an external oil delivery mechanism through an oil supply pipe. During the process of the external oil delivery mechanism supplying oil to the elastic telescopic cavity, the internal pressure of the elastic telescopic cavity increases, thereby pushing the sponge smear layer to move toward the side close to the rolling element, and the elastic telescopic cavity pumps the internal lubricating oil onto the sponge smear layer through the oil supply hole opened in the elastic telescopic cavity. During the rotation of the rolling element, the lubricating oil is smeared on the surface of the rolling element by contact, thereby completing the lubrication.

[0016] Preferably, the heat dissipation mechanism for dissipating heat for various components of the rolling bearing is a heat dissipation nozzle, which is installed in a nozzle slot opened in the isolation area. The heat dissipation nozzle is connected to an external pump air device through an air supply pipe, and the gas sprayed by the heat dissipation nozzle dissipates the heat generated by the rolling body during rotation.

[0017] Preferably, both the outer ring and the sliding seat are provided with accommodation compartments for accommodating the air supply pipe and the oil supply pipe.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention cleverly combines the rotating bodies of ball bearings and cylindrical bearings, and makes targeted adjustments to the rolling bodies according to the load requirements of the roller shaft, so that the use of the bearings can effectively meet the working conditions, fully utilizes the characteristics of bearings with different rolling elements, and further provides space for the lubrication and heat dissipation of the bearings, thereby further extending the service life of the bearings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the matching state of the ball roller and the ball embedding groove of the present invention;

[0021] Figure 2 It is a schematic diagram of the matching state of the cylindrical roller and the cylindrical embedding groove of the present invention;

[0022] Figure 3 It is a schematic diagram of the installation mechanism of the lubrication mechanism and the heat dissipation mechanism of the present invention;

[0023] Figure 4 It is a schematic side view of the overall structure of the retainer of the present invention;

[0024] Figure 5 It is a front view schematic diagram of the overall structure of the retainer of the present invention.

[0025] In the figure: 1 inner ring, 2 ball groove, 3 cylindrical groove, 4 ball roller, 5 cylindrical roller, 6 cage, 7 ball limiting hole, 8 cylindrical limiting hole, 9 outer ring, 10 ball embedding groove, 11 cylindrical embedding groove, 12 isolation area, 13 translation screw, 14 screw hole, 15 translation motor, 16 sliding seat, 17 translation slide, 18 annular adsorption magnet, 19 telescopic groove, 20 elastic telescopic cavity, 21 sponge smear layer, 22 oil supply pipe, 23 heat dissipation nozzle, 24 nozzle groove, 25 air supply pipe, 26 accommodating bin, 27 main cage, 28 side cage, 29 roller shaft. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-5 , the present invention provides a technical solution:

[0028] Embodiment 1:

[0029] A rolling bearing, comprising:

[0030] The inner ring 1 is provided with grooves for the rolling elements to be embedded, and the grooves include a ball groove 2 and a cylindrical groove 3;

[0031] Rolling body, the rolling body includes a ball roller 4 and a cylindrical roller 5, the ball roller 4 and the cylindrical roller 5 are embedded in the ball groove 2 and the cylindrical groove 3 respectively;

[0032] A cage 6, on which a plurality of ball limiting holes 7 and cylindrical limiting holes 8 are provided in an annular array, in which ball rollers 4 or cylindrical rollers 5 are embedded in a one-to-one correspondence, and the ball rollers 4 and cylindrical rollers 5 are respectively arranged on both sides of the cage 6 in the axial direction; and,

[0033] The outer ring 9 has a ball embedding groove 10 and a cylindrical embedding groove 11 respectively formed inside the outer ring 9 to match the ball roller 4 and the cylindrical roller 5. The outer ring 9 is coaxial with the inner ring 1 and is arranged to slide and translate along the axial direction of the inner ring 1. During the sliding and translation process of the outer ring 9, the ball roller 4 and the ball embedding groove 10, the cylindrical roller 5 and the cylindrical embedding groove 11 are in a matching state, and only one group is in a matching state; wherein,

[0034] The ball embedding groove 10 and the cylindrical embedding groove 11 on the inner side of the outer ring 9 are separated to form an isolation zone 12. The isolation zone 12 is concave toward the side away from the inner ring 1 so as to be out of contact with the ball roller 4 and the cylindrical roller 5. A lubrication mechanism and a heat dissipation mechanism are arranged in the isolation zone 12. Through the arrangement of the lubrication mechanism and the heat dissipation mechanism, the various components of the rolling bearing can be lubricated and cooled.

[0035] In this embodiment, the inner ring 1, outer ring 9, rolling element and retainer 6 structure in the prior art are included. Different from the prior art, the rolling element is not a single ball roller or cylindrical roller form, but a combination of the two. Among them, the ball roller 4 can bear radial load and axial load at the same time and has good self-aligning performance, while the cylindrical roller 5 mainly bears radial load, but has a high load-bearing capacity and is suitable for high-speed operation. Therefore, for different usage scenarios, through the translational sliding of the outer ring 9, the ball roller 4 and the ball embedding groove 10, the cylindrical roller 5 and the cylindrical embedding groove 11 are in a matching state with only one group, thereby realizing the conversion of ball rolling element bearings and cylindrical rolling element bearings. This conversion can be based on the roller shaft 2 installed on the inner ring 1. 9 is determined by the operation requirements, and benefits from the fact that the ball roller 4 and the cylindrical roller 5 are installed on the same rolling element. When the rolling element on one side cooperates with the ball embedding groove 10 or the cylindrical embedding groove 11 set in the outer ring 9, the ball roller 4 or the cylindrical roller 5 on the other side is in an external disengagement state. At this time, it exchanges heat with the air during rotation, so as to dissipate the heat generated by the friction between the rolling element on the other side and the inner ring 1 and the outer ring 9 in time. Therefore, this special rolling element mechanism is not only a mechanical combination of two rolling elements, but also further enhances the heat dissipation effect of the rolling element. In addition, the composite rolling element and its retaining frame 6 can further be provided with a lubrication mechanism and a heat dissipation mechanism inside due to the ample internal space, so as to further extend the service life of the bearing.

[0036] Embodiment 2:

[0037] The mechanism for driving the outer ring to slide and translate is a translation screw 13, which cooperates with a screw hole 14 opened in the outer ring 9. There are multiple translation screws 13 and screw holes 14 corresponding to each other and distributed in a ring array. Several translation screws 13 are fixedly connected to the driving shaft of the translation motor 15, and the translation motor 15 is fixedly installed in the sliding seat 16. A translation groove 17 is opened on the inner side of the sliding seat 16 for the outer ring 9 to be embedded.

[0038] In this embodiment, the outer ring 9 on the outside is slidably installed inside the translation groove 17 opened in the sliding seat 16, and slides left and right translationally during the rotation of the translation motor 15, so that the ball roller 4 and the cylindrical roller 5 cooperate with the corresponding ball embedding groove 10 or cylindrical embedding groove 11.

[0039] Embodiment three:

[0040] The retainer 6 is composed of a main retainer 27 and side retainers 28 arranged on both sides of the main retainer 27 to match the main retainer 27. The side retainers 28 on both sides are fastened to the main retainer 27 by rivets.

[0041] An annular adsorption magnet 18 is also installed in the inner ring 1. The annular adsorption magnet 18 adsorbs the ball roller 4 and the cylindrical roller 5 so that the two do not lose the fit with the ball groove 2 or the cylindrical groove 3 during the translational sliding process of the outer ring 9.

[0042] In this embodiment, the specific structure of the retaining frame 6 is further disclosed, and its installation method is similar to that of the retaining frame in the prior art. However, since the retaining frame 6 has two types of rolling body accommodating spaces, its structure is specifically designed. At the same time, in order to prevent the rolling bodies from detaching from the retaining frame 6, the ball limiting holes 7 and the cylindrical limiting holes 8 of the retaining frame 6 are smaller than the diameters of the ball roller 4 and the cylindrical roller 5. When the retaining frame 6 is installed, the ball roller 4 and the cylindrical roller 5 are simultaneously limited and fixed, which can prevent the ball roller 4 and the cylindrical roller 5 from falling off by passing through the ball limiting holes 7 and the cylindrical limiting holes 8, and further the ball roller 4 and the cylindrical roller 5 are adsorbed by magnetic force through the setting of the annular adsorption magnet 18.

[0043] Embodiment 4:

[0044] The lubrication mechanism for lubricating the various components of the rolling bearing is a lubricating telescopic block, which is installed in the telescopic groove 19 opened in the isolation area. The lubricating telescopic block consists of an elastic telescopic chamber 20 and a sponge smear layer 21 installed at the end. The elastic telescopic chamber 20 is connected to the external oil delivery mechanism through an oil supply pipe 22. During the oil supply process of the external oil delivery mechanism into the elastic telescopic chamber 20, the internal pressure of the elastic telescopic chamber 20 increases, thereby pushing the sponge smear layer 21 to move toward the side close to the rolling element. The elastic telescopic chamber 20 pumps the internal lubricating oil onto the sponge smear layer 21 through the opened oil supply hole. During the rotation of the rolling element, the lubricating oil is smeared on the surface of the rolling element by contact to complete the lubrication.

[0045] In this embodiment, the elastic telescopic chamber 20 has a traction spring inside for contracting and pulling the chamber. When the external oil delivery mechanism supplies oil to the elastic telescopic chamber 20, the pressure in the elastic telescopic chamber 20 increases and the chamber extends outward. At this time, the sponge coating layer 21 at the end of the elastic telescopic chamber 20 moves toward the side close to the rolling element, and realizes the filling of lubricating oil through contact with the rolling element and the rotation of the rolling element itself. The filling is carried out under manual control, usually regularly during maintenance, and slides in translation with the action of the outer ring 9, so that the ball roller 4 and the cylindrical roller 5 can be effectively filled with lubricating oil, and as the rolling element contacts the inner ring 1, the outer ring 9 and the retaining frame 6, all-round smearing and lubrication are carried out. The advantage of this design is that when the external oil delivery mechanism stops pumping oil, under the action of the traction spring, the sponge coating layer 21 can be separated from the rolling element again, thereby reducing the friction of the rolling element during rotation.

[0046] Embodiment five:

[0047] The heat dissipation mechanism for dissipating heat from various components of the rolling bearing is a heat dissipation nozzle 23. The heat dissipation nozzle 23 is installed in a nozzle groove 24 opened in the isolation area 12. The heat dissipation nozzle 23 is connected to an external pump air device through an air supply pipe 25. The gas ejected by the heat dissipation nozzle 23 dissipates the heat generated by the rolling body during rotation.

[0048] In this embodiment, the heat dissipation nozzle 23 further pumps heat dissipation gas onto the rolling element, thereby causing the rolling element to cool down. This operation can effectively alleviate the mechanical fatigue of the bearing during high-speed operation, thereby extending its service life. Furthermore, a receiving chamber 26 for accommodating the air supply pipe 25 and the oil supply pipe 22 is provided in the outer ring 9 and the sliding seat 16, thereby providing a receiving space for the air supply pipe 25 and the oil supply pipe 22.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rolling bearing, characterized in that: include: An inner ring, wherein the inner ring is provided with grooves for the rolling bodies to be embedded, and the grooves include ball grooves and cylindrical grooves; Rolling body, the rolling body includes a ball roller and a cylindrical roller, the ball roller and the cylindrical roller are embedded in the ball groove and the cylindrical groove respectively; A cage, wherein a plurality of ball limiting holes and cylindrical limiting holes are formed in an annular array, wherein ball rollers and cylindrical rollers are embedded in the ball limiting holes and cylindrical limiting holes in a one-to-one correspondence, and the ball rollers and cylindrical rollers are respectively arranged on both sides of the cage in the axial direction; and, The outer ring has a ball embedding groove and a cylindrical embedding groove respectively formed on the inner side thereof, which are matched with the ball roller and the cylindrical roller. The outer ring is coaxial with the inner ring and is arranged to slide and translate along the axial direction of the inner ring. During the sliding and translation process of the outer ring, the ball roller and the ball embedding groove, the cylindrical roller and the cylindrical embedding groove are in a matched state, and only one group is in a matched state; wherein, The ball embedding groove and the cylindrical embedding groove on the inner side of the outer ring are separated to form an isolation zone, and the isolation zone is concave toward the side away from the inner ring so as to be out of contact with the ball roller and the cylindrical roller. A lubrication mechanism and a heat dissipation mechanism are arranged in the isolation zone, and the lubrication mechanism and the heat dissipation mechanism are arranged to lubricate and dissipate heat for various components of the rolling bearing; An annular adsorption magnet is also installed in the inner ring, and the ball roller and the cylindrical roller are adsorbed by the annular adsorption magnet so that the two do not lose the cooperation with the ball groove or the cylindrical groove during the translational sliding process of the outer ring; The lubrication mechanism for lubricating the various components of the rolling bearing is a lubricating telescopic block, which is installed in a telescopic groove opened in the isolation area. The lubricating telescopic block consists of an elastic telescopic cavity and a sponge smear layer installed at the end. The elastic telescopic cavity is connected to an external oil delivery mechanism through an oil supply pipe. During the process of the external oil delivery mechanism supplying oil to the elastic telescopic cavity, the internal pressure of the elastic telescopic cavity increases, thereby pushing the sponge smear layer to move toward the side close to the rolling element. The elastic telescopic cavity pumps the internal lubricating oil onto the sponge smear layer through the oil supply hole opened. During the rotation of the rolling element, the lubricating oil is applied to the surface of the rolling element by contact to complete the lubrication.

2. A rolling bearing according to claim 1, characterized in that: The mechanism for driving the outer ring to slide and translate is a translation screw, which cooperates with the screw hole opened in the outer ring. There are multiple translation screws and screw holes corresponding to each other and distributed in a circular array. Several of the translation screws are fixedly connected to the driving shaft of the translation motor. The translation motor is fixedly installed in the sliding seat, and a translation groove for the outer ring to be embedded is opened on the inner side of the sliding seat.

3. A rolling bearing according to claim 1 or 2, characterized in that: The retaining frame is composed of a main retaining frame and side retaining frames arranged on both sides of the main retaining frame to match the main retaining frame. The side retaining frames on both sides are fastened to the main retaining frame by rivets.

4. A rolling bearing according to claim 3, characterized in that: The heat dissipation mechanism for dissipating heat for various components of the rolling bearing is a heat dissipation nozzle. The heat dissipation nozzle is installed in a nozzle groove opened in the isolation area. The heat dissipation nozzle is connected to an external pump air device through an air supply pipe. The gas sprayed by the heat dissipation nozzle dissipates the heat generated by the rolling body during rotation.

5. A rolling bearing according to claim 4, characterized in that: The outer ring and the sliding seat are both provided with accommodation chambers for accommodating the air supply pipe and the oil supply pipe.

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