slewing bearing

Abstract

This application relates to a slewing bearing, belonging to the field of slewing bearing technology, and aims to solve the problem in related technologies where the spacer blocks easily jam with the inner and outer rings, preventing the inner and outer rings from rotating relative to each other. The slewing bearing includes an outer ring, an inner ring, multiple rollers, and multiple spacer blocks. The inner side of the outer ring is provided with a first rolling surface and a first sliding surface; the outer side of the inner ring is provided with a second rolling surface and a second sliding surface. The second sliding surface, the second rolling surface, the first sliding surface, and the first rolling surface form a rolling channel. A guide protrusion is provided on either the second sliding surface or the first sliding surface. A guide groove is provided on one side of each spacer block, and the guide groove is fitted onto the guide protrusion. Each roller is located in two adjacent spacer blocks. This slewing bearing can prevent interference between the spacer blocks and the inner and outer rings, and prevent jamming between the spacer blocks and the inner and outer rings, thus preventing the inner and outer rings from rotating relative to each other.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application belongs to the technical field of slewing bearings, and particularly relates to a slewing bearing. BACKGROUND

[0002] The slewing bearing is a large bearing which can simultaneously bear large axial, radial load and overturning moment, and is widely applied to many fields such as heading machines, wind turbine main shafts, ship cranes and the like.

[0003] In the related art, the slewing bearing generally comprises an inner ring and an outer ring, the outer ring is sleeved on the outer ring, and a rolling channel is arranged between the outer ring and the inner ring, a plurality of rollers are arranged in the rolling channel, the plurality of rollers are arranged in sequence in the rolling channel, and a separation block is arranged between adjacent two rollers. When the inner ring and the outer ring rotate relative to each other, the rollers roll in the rolling channel, and the separation block slides in the rolling channel to form rolling friction between the inner ring and the outer ring.

[0004] However, when the inner ring and the outer ring rotate relative to each other, the separation block is easily stuck between the inner ring and the outer ring, so that the inner ring and the outer ring cannot rotate relative to each other. SUMMARY

[0005] Therefore, the embodiment of the present application provides a slewing bearing to solve the technical problem that the separation block is easily stuck between the inner ring and the outer ring in the related art, so that the inner ring and the outer ring cannot rotate relative to each other.

[0006] The embodiment of the present application provides a slewing bearing, which comprises an outer ring, an inner ring, a plurality of rollers and a plurality of separation blocks, the inner side of the outer ring is provided with a first rolling surface and a first sliding surface, the first rolling surface is perpendicular to the axis of the outer ring; the first sliding surface is connected with the first rolling surface and is perpendicular to the first rolling surface; the inner ring is located in the outer ring, the outer side of the inner ring is provided with a second rolling surface and a second sliding surface, the second rolling surface is perpendicular to the axis of the inner ring; the second sliding surface is connected with the second rolling surface and is perpendicular to the second rolling surface; the second sliding surface, the second rolling surface, the first sliding surface and the first rolling surface surround to form a rolling channel; one of the first sliding surface and the second sliding surface is provided with a guide protrusion or a guide groove; the plurality of separation blocks are arranged in the rolling channel at intervals, one side of the separation block is provided with a guide groove sleeved on the guide protrusion or a guide protrusion inserted into the guide groove; each roller is located between adjacent two separation blocks, the rolling surface of each roller abuts against the two adjacent separation blocks and abuts against the first rolling surface and the second rolling surface.

[0007] The slewing bearing of the embodiment of the present application, when the outer ring and the inner ring relatively rotate, the rollers roll on the first rolling surface and the second rolling surface in the rolling channel, and push the isolation block to slide relative to the first sliding surface and the second sliding surface in the rolling channel. The isolation block is provided with a guide groove or a guide protrusion, the guide groove is sleeved on the guide protrusion provided on one of the first sliding surface and the second sliding surface, or the guide protrusion is inserted into the guide groove provided on one of the first sliding surface and the second sliding surface, and the matched guide protrusion and the guide groove play a limiting and guiding role on the isolation block, avoiding the interference between the isolation block and the inner ring and the outer ring, preventing the isolation block from being stuck between the inner ring and the outer ring to make the inner ring and the outer ring unable to relatively rotate, and improving the reliability of the slewing bearing.

[0008] In some possible implementation manners that can include the above-mentioned embodiments, the guide protrusion and the guide groove have an oil storage gap therebetween, and the oil storage gap is configured to store lubricating oil.

[0009] In some possible implementation manners that can include the above-mentioned embodiments, the isolation block includes a first side beam, a connecting beam and a second side beam, the first side beam is provided with the guide groove or the guide protrusion; the second side beam is spaced apart from and opposite to the first side beam; the connecting beam is located between the first side beam and the second side beam and connects the first side beam and the second side beam, and two side surfaces of the connecting beam are respectively in abutment with the rolling surfaces of two rollers adjacent thereto.

[0010] In some possible implementation manners that can include the above-mentioned embodiments, the two side surfaces of the connecting beam are both arc surfaces that are in abutment with the rolling surfaces of the rollers.

[0011] In some possible implementation manners that can include the above-mentioned embodiments, along the extension direction of the guide groove, both ends of the first side beam and the second side beam protrude from the connecting beam, and the surface of the first side beam facing the second side beam, the side surface of the connecting beam and the surface of the second side beam facing the first side beam surround to form a containing space for containing the rollers.

[0012] In some possible implementation manners that can include the above-mentioned embodiments, one side of the connecting beam facing the first rolling surface and / or the second rolling surface has a protruding portion protruding from the end surface of the first side beam and the second side beam, the protruding portion is provided with a groove, and the groove penetrates through the protruding portion along the connecting direction of the first side beam and the second side beam.

[0013] In some possible implementation manners that can include the above-mentioned embodiments, the material of the isolation block is polytetrafluoroethylene, polyether ether ketone, nylon or brass.

[0014] In some possible implementation manners that can include the above-mentioned embodiments, the other of the first sliding surface and the second sliding surface is provided with at least one oil storage groove configured to store lubricating oil.

[0015] In some possible implementation manners that can include the above-mentioned embodiments, the spacer block has a central surface perpendicular to the axis of the outer ring, and the at least one oil storage groove is symmetrically arranged relative to the central surface.

[0016] In some possible implementation manners that can include the above-mentioned embodiments, the outer ring comprises a first outer ring, the first rolling surface comprises a first main thrust rolling surface, the first sliding surface comprises a first main thrust sliding surface, the first main thrust rolling surface and the first main thrust sliding surface are both arranged on the inner side of the first outer ring, the first main thrust rolling surface is perpendicular to the axis of the first outer ring, the first main thrust sliding surface is connected to the first main thrust rolling surface and is perpendicular to the first main thrust rolling surface, the second rolling surface comprises a second main thrust rolling surface, the second main thrust rolling surface is perpendicular to the axis of the inner ring, the second sliding surface comprises a second main thrust sliding surface, the second main thrust sliding surface is connected to the second main thrust rolling surface and is perpendicular to the second main thrust rolling surface, the second main thrust sliding surface, the second main thrust rolling surface, the first main thrust sliding surface and the first main thrust rolling surface form a main thrust rolling channel, one of the first main thrust sliding surface and the second main thrust sliding surface is provided with a first guide protrusion or a first guide groove, and the spacer block comprises a plurality of main thrust spacer blocks, the plurality of main thrust spacer blocks are arranged in the main thrust rolling channel in a spaced manner, and one side of the main thrust spacer block is provided with a first guide groove sleeved on the first guide protrusion or a first guide protrusion inserted into the first guide groove.

[0017] Or, the outer ring comprises a second outer ring; the first rolling surface comprises a first auxiliary pushing rolling surface; the first sliding surface comprises a first auxiliary pushing sliding surface; the first auxiliary pushing rolling surface and the first auxiliary pushing sliding surface are both arranged on the inner side of the second outer ring, and the first auxiliary pushing rolling surface is perpendicular to the axis of the second outer ring; the first auxiliary pushing sliding surface is connected with the first auxiliary pushing rolling surface and is perpendicular to the first auxiliary pushing rolling surface; the second rolling surface comprises a second auxiliary pushing rolling surface, and the second auxiliary pushing rolling surface is perpendicular to the axis of the inner ring; the second sliding surface comprises a second auxiliary pushing sliding surface, and the second auxiliary pushing sliding surface is connected with the second auxiliary pushing rolling surface and is perpendicular to the second auxiliary pushing rolling surface; the second auxiliary pushing sliding surface, the second auxiliary pushing rolling surface, the first auxiliary pushing sliding surface and the first auxiliary pushing rolling surface form an auxiliary pushing rolling channel; one of the first auxiliary pushing sliding surface and the second auxiliary pushing sliding surface is provided with a second guide protrusion or a second guide groove; the spacer block comprises a plurality of auxiliary pushing spacer blocks, and the plurality of auxiliary pushing spacer blocks are arranged in the auxiliary pushing rolling channel in a spaced manner, and one side of the auxiliary pushing spacer block is provided with a second guide groove sleeved on the second guide protrusion or a second guide protrusion inserted into the second guide groove. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0019] Figure 1 The cross-sectional view of the slewing bearing in the first embodiment of the present application is shown in the figure.

[0020] Figure 2 The cross-sectional view of the inner ring in the first embodiment of the present application is shown in the figure. Figure 1

[0021] Figure 3 The cross-sectional view of the inner ring in the first embodiment of the present application is shown in the figure. Figure 1

[0022] Figure 4 The cross-sectional view of the second outer ring in the first embodiment of the present application is shown in the figure. Figure 1

[0023] Figure 5 The partial enlarged cross-sectional view of the main pushing spacer block and the main pushing roller in the first embodiment of the present application is shown in the figure. Figure 1

[0024] Figure 6 The structure diagram of the main pushing spacer block in the first embodiment of the present application is shown in the figure. Figure 1

[0025] ​​​​​Figure 7 For Figure 1 The force analysis diagram between the main pushing block and the main pushing roller in the middle;

[0026] Figure 8 The cross-sectional schematic diagram of the slewing bearing of the second embodiment of the present application;

[0027] Figure 9 For Figure 8 The cross-sectional schematic diagram of the second outer ring;

[0028] Figure 10 For Figure 8 The cross-sectional schematic diagram of the inner ring;

[0029] Figure 11 For Figure 8 The cross-sectional schematic diagram of the first outer ring.

[0030] Explanation of reference signs:

[0031] 10-First outer ring; 110-First main pushing rolling surface;

[0032] 120-First main pushing sliding surface; 121-First guide protrusion;

[0033] 130-First radial blocking surface; 140-First avoiding surface;

[0034] 150-First radial limiting surface; 160-Second radial rolling surface;

[0035] 170-Connecting protrusion; 20-Second outer ring;

[0036] 210-Connecting groove; 220-Second radial limiting surface;

[0037] 230-Second avoiding surface; 240-Second radial blocking surface;

[0038] 250-First auxiliary pushing sliding surface; 251-Second oil storage groove;

[0039] 260-First auxiliary pushing rolling surface; 261-First accommodating groove;

[0040] 262-Second accommodating groove; 263-Elastic member;

[0041] 264-Floating ring; 30-Inner ring;

[0042] 310-Second main pushing rolling surface; 320-Second main pushing sliding surface;

[0043] 321-First oil storage groove; 330-Second radial rolling surface;

[0044] 340 - second auxiliary pushing rolling surface; 350 - second auxiliary pushing sliding surface;

[0045] 351 - second guide protrusion; 410 - main pushing isolator;

[0046] 420 - first side beam; 421 - first guide groove;

[0047] 422 - oil storage gap; 430 - second side beam;

[0048] 440 - connecting beam; 441 - protrusion;

[0049] 442 - groove; 450 - auxiliary pushing isolator;

[0050] 451 - second guide groove; 510 - main pushing roller;

[0051] 520 - auxiliary pushing roller; 60 - radial rolling assembly;

[0052] 610 - radial retainer; 620 - radial roller. DETAILED DESCRIPTION

[0053] The slewing bearing in the related art has a technical problem that the isolator is easily jammed between the inner ring and the outer ring, so that the inner ring and the outer ring cannot rotate relative to each other. The inventor has found that the above technical problem is caused by the fact that the isolator can slide in the rolling channel, and the isolator has a gap between the inner ring and the outer ring, so that the isolator is easily tilted, and thus the isolator interferes with the inner ring and the outer ring, and further causes the isolator to be easily jammed between the inner ring and the outer ring, so that the inner ring and the outer ring cannot rotate relative to each other.

[0054] Therefore, the embodiments of the present application provide a slewing bearing. A guide protrusion or a guide groove is arranged on a first sliding surface or a second sliding surface in a rolling channel, and the isolator is provided with a guide groove sleeved on the guide protrusion or a guide protrusion inserted in the guide groove. The matched guide protrusion and guide groove limit and guide the isolator, avoid the isolator interfering with the inner ring and the outer ring, prevent the isolator from being jammed between the inner ring and the outer ring, so that the inner ring and the outer ring cannot rotate relative to each other, and improve the reliability of the slewing bearing.

[0055] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0056] The application provides a slewing bearing, which comprises an outer ring, an inner ring, a plurality of rollers and a plurality of isolation blocks. The inner side of the outer ring is provided with a first rolling surface and a first sliding surface, and the first rolling surface is perpendicular to the axis of the outer ring. The first sliding surface is connected with the first rolling surface and is perpendicular to the first rolling surface. The inner ring is located in the outer ring, and the outer side of the inner ring is provided with a second rolling surface and a second sliding surface. The second rolling surface is perpendicular to the axis of the inner ring. The second sliding surface is connected with the second rolling surface and is perpendicular to the second rolling surface. The second sliding surface, the second rolling surface, the first sliding surface and the first rolling surface surround a rolling channel. One of the first sliding surface and the second sliding surface is provided with a guide protrusion or a guide groove. The plurality of isolation blocks are arranged in the rolling channel at intervals. One side of the isolation block is provided with a guide groove sleeved on the guide protrusion or a guide protrusion inserted into the guide groove. Each roller is located between two adjacent isolation blocks. The rolling surface of each roller abuts against the two adjacent isolation blocks and abuts against the first rolling surface and the second rolling surface.

[0057] When the outer ring and the inner ring rotate relative to each other, the rollers roll on the first rolling surface and the second rolling surface in the rolling channel, and push the isolation blocks to slide relative to the first sliding surface and the second sliding surface in the rolling channel. The isolation block is provided with a guide groove or a guide protrusion. The guide groove is sleeved on the guide protrusion provided on one of the first sliding surface and the second sliding surface, or the guide protrusion is inserted into the guide groove provided on one of the first sliding surface and the second sliding surface. The matched guide protrusion and guide groove limit and guide the isolation block, avoid interference between the isolation block and the inner ring and the outer ring, prevent the isolation block from being stuck between the inner ring and the outer ring so that the inner ring and the outer ring cannot rotate relative to each other, and improve the reliability of the slewing bearing.

[0058] The technical scheme of the application is described in detail below by taking a three-row roller combination turntable bearing as an example. The technical scheme of the application can be applied in the main pushing rolling channel and / or the auxiliary pushing rolling channel of the three-row roller combination turntable bearing. It can be understood that the technical scheme of the application can also be applied in other types of slewing bearings, and the application will not be described here.

[0059] First embodiment

[0060] Reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5The outer ring of the slewing bearing can include a first outer ring 10. The first main thrust rolling surface can include a first main thrust rolling surface 110. The first main thrust sliding surface can include a first main thrust sliding surface 120. The first main thrust sliding surface 120 and the first main thrust rolling surface 110 are both disposed on the inner side of the first outer ring 10. The first main thrust rolling surface 110 is perpendicular to the axis of the first outer ring 10. The first main thrust sliding surface 120 is connected to the first main thrust rolling surface 110, and the first main thrust sliding surface 120 is perpendicular to the first main thrust rolling surface 110.

[0061] The inner ring 30 is located in the first outer ring 10, and the axis of the inner ring 30 coincides with the axis of the first outer ring 10. The second rolling surface of the inner ring 30 can include a second main thrust rolling surface 310, which is perpendicular to the axis of the inner ring 30. The second sliding surface of the inner ring 30 can include a second main thrust sliding surface 320, which is connected to the second main thrust rolling surface 310 and is perpendicular to the second main thrust rolling surface 310. The guide protrusion can include a first guide protrusion 121 disposed on the first main thrust sliding surface 120. The second main thrust sliding surface 320, the second main thrust rolling surface 310, the first main thrust sliding surface 120, and the first main thrust rolling surface 110 form a main thrust rolling channel.

[0062] The spacer block can include a main thrust spacer block 410, and there can be multiple main thrust spacer blocks 410, which are arranged at intervals in the main thrust rolling channel. One side of the main thrust spacer block 410 is provided with a first guide groove 421, for example Figure 1 As shown, the first guide groove 421 is disposed on the side of the main thrust spacer block 410 facing the first main thrust sliding surface 120, and the first guide groove 421 is sleeved on the first guide protrusion 121.

[0063] The roller can include a main thrust roller 510, and there can be multiple main thrust rollers 510, which are located in the main thrust rolling channel, and each main thrust roller 510 is located between two adjacent main thrust spacer blocks 410. The rolling surface of each main thrust roller 510 abuts against the two adjacent main thrust spacer blocks 410, and the rolling surface of each main thrust roller 510 abuts against the first main thrust rolling surface 110 and the second main thrust rolling surface 310. Exemplarily, the main thrust roller 510 can be a ball, a roller, or a needle.

[0064] When the first outer ring 10 and the inner ring 30 rotate relative to each other, the main thrust roller 510 rolls in the main thrust rolling channel to be in rolling contact with the first main thrust rolling surface 110 and the second main thrust rolling surface 310, thereby reducing the friction between the first main thrust rolling surface 110 and the second main thrust rolling surface 310. When the main thrust roller 510 rolls, the main thrust spacer 410 slides relative to the first main thrust sliding surface 120 and the second main thrust sliding surface 320, the first guide groove 421 of the main thrust spacer 410 is sleeved on the first guide protrusion 121, and the matched first guide protrusion 121 and the first guide groove 421 limit and guide the main thrust spacer 410, so as to avoid the main thrust spacer 410 from being skewed, thereby avoiding the interference between the main thrust spacer 410 and the inner ring 30 and the first outer ring 10, preventing the main thrust spacer 410 from being stuck between the inner ring 30 and the first outer ring 10, and making the inner ring 30 and the first outer ring 10 unable to rotate relative to each other, and improving the reliability of the slewing bearing.

[0065] In some possible implementation manners of the first embodiment of the present application, the positions of the first guide protrusion 121 and the first guide groove 421 can be interchanged, that is, the first guide protrusion 121 is arranged on the side of the main thrust spacer 410 facing the first main thrust sliding surface 120, and the first guide groove 421 is arranged on the first main thrust sliding surface 120.

[0066] Exemplarily, in the radial direction of the first outer ring 10, the thickness of the first guide protrusion 121 can be equal to the sum of the maximum radial displacement of the main thrust spacer 410 in the main thrust rolling channel and the first preset width. That is, the thickness of the first guide protrusion 121 is greater than the radial displacement of the main thrust spacer 410. In this way, the main thrust spacer 410 can be prevented from being separated from the first guide protrusion 121 in the radial direction of the first outer ring 10. Exemplarily, the first preset width can be 3 mm, and the first preset width can also be specifically set according to actual conditions, and the embodiments of the present application will not be repeated here.

[0067] It should be noted that the maximum radial displacement of the main thrust spacer 410 in the main thrust rolling channel refers to the maximum displacement of the main thrust spacer 410 in the radial direction of the first outer ring 10 when the slewing bearing is working.

[0068] Exemplarily, with reference to Figure 5The first guide protrusion 121 and the guide groove 421 can have an oil storage gap 422 configured to store lubricating oil therebetween. In this way, a lubricating oil passage is formed between the first guide protrusion 121 and the guide groove 421, the lubricating effect between the first guide protrusion 121 and the guide groove 421 is enhanced, and the wear between the first guide protrusion 121 and the guide groove 421 is reduced. For example, the width of the oil storage gap 422 can be a second preset width a, which can be 1 mm. That is, the thickness of the first guide protrusion 121 can be equal to the depth of the guide groove 421 minus the second preset width a. The second preset width a can also be other values, which can be specifically set according to the amount of stored lubricating oil, and the embodiments of the present application will not be repeated here.

[0069] For example, the other of the second sliding surface and the first sliding surface can be provided with at least one oil storage groove configured to store lubricating oil. Figure 1 As shown, the oil storage groove can include a first oil storage groove 321, and the number of the first oil storage groove 321 can be at least one. The at least one first oil storage groove 321 can be arranged on the second main push sliding surface 320. The first oil storage groove 321 can be used to store lubricating oil, so that a lubricating oil passage is formed between the main push isolation block 410 and the second main push sliding surface 320, the lubricating effect between the main push isolation block 410 and the second main push sliding surface 320 is enhanced, and the wear between the main push isolation block 410 and the second main push sliding surface 320 is reduced.

[0070] The at least one first oil storage groove 321 means that the number of the first oil storage groove 321 can be one. The number of the first oil storage groove 321 can also be multiple, for example, three. The multiple first oil storage grooves 321 can reduce the contact area between the main push isolation block 410 and the second main push sliding surface 320, reduce the friction between the main push isolation block 410 and the second main push sliding surface 320, and improve the oil storage function of the first oil storage groove 321, thereby improving the lubricating effect between the main push isolation block 410 and the second main push sliding surface 320.

[0071] For example, with reference to Figure 5 The main push isolation block 410 has a central surface A perpendicular to the axis of the first outer ring 10. The at least one first oil storage groove 321 can be symmetrically arranged relative to the central surface A. In this way, the lubricating oil in the first oil storage groove 321 can be symmetrically distributed relative to the central surface A of the main push isolation block 410, the uniformity of the contact between the lubricating oil in the first oil storage groove 321 and the main push isolation block 410 is improved, and the lubricating effect on the main push isolation block 410 is improved.

[0072] For example Figure 5As shown in the figures, the first oil storage groove 321 has three in number, and the three first oil storage grooves 321 are arranged in an axial interval along the first outer ring 10. The center line of the first oil storage groove 321 in the middle coincides with the center face A of the main pushing isolation block 410, and the other two first oil storage grooves 321 are symmetrically arranged on both sides of the first oil storage groove 321 in the middle. The width of each first oil storage groove 321 can be b, and the depth of each first oil storage groove 321 can also be b, and b can be 3 mm. The distance between one first oil storage groove 321 on the side and the first oil storage groove 321 in the middle can be c, and c can be 7 mm. In this way, the lubrication effect of the main pushing isolation block 410 can be further improved.

[0073] Exemplarily, referring to Figure 6 , the main pushing isolation block 410 can include a first side beam 420, a connecting beam 440, and a second side beam 430. The first side beam 420 can be provided with a first guide groove 421. The second side beam 430 is arranged in an interval and opposite to the first side beam 420, and the side of the second side beam 430 away from the first side beam 420 can slide relative to the second main pushing sliding surface 320. The connecting beam 440 is located between the first side beam 420 and the second side beam 430, and connects the first side beam 420 and the second side beam 430. The two side faces of the connecting beam 440 respectively abut the rolling faces of the two main pushing rollers 510 adjacent thereto. The main pushing isolation block 410 has a simple structure and good processability.

[0074] Referring to Figure 5 , along the extension direction of the first guide groove 421, the two ends of the first side beam 420 and the second side beam 430 protrude from the connecting beam 440, and the surface of the first side beam 420 facing the second side beam 430, the side surface of the connecting beam 440, and the surface of the second side beam 430 facing the first side beam 420 surround to form an accommodation space for accommodating the main pushing roller 510. The first side beam 420 and the second side beam 430 can limit the main pushing roller 510 to prevent the main pushing roller 510 from being skewed or other unstable movements during rolling, avoid damage to the main pushing roller 510, and avoid the main pushing roller 510 from being stuck between the main pushing isolation block 410, the first outer ring 10, and the inner ring 30, so that the first outer ring 10 and the inner ring 30 cannot rotate relative to each other.

[0075] Exemplarily, the length of the first side beam 420 and the second side beam 430 in the circumferential direction of the first outer ring 10 is not more than twice the diameter of the main pushing roller 510, so that during the rotation of the first outer ring 10 relative to the inner ring 30, the adjacent two main pushing isolation blocks 410 will not be in contact, thereby avoiding the collision of the adjacent two main pushing isolation blocks 410.

[0076] Exemplarily, the height of the first side beam 420 and the second side beam 430 in the axial direction of the first outer ring 10 can be greater than or equal to one half of the diameter of the main thrust roller 510, and less than or equal to four fifths of the diameter of the main thrust roller 510, for example, can be three fifths of the diameter of the main thrust roller 510. The first side beam 420 and the second side beam 430 with the height in the range can enable the main thrust spacer 410 to smoothly pass in the main thrust rolling channel, and can avoid the two ends of the two adjacent main thrust spacers 410 from overlapping to cause the slewing bearing to be stuck during the rotation of the first outer ring 10 relative to the inner ring 30.

[0077] Exemplarily, the two side surfaces of the connecting beam 440 can also be planes that are fitted with the rolling surface of the main thrust roller 510. The plane can be a straight plane that is parallel to the axis of the first outer ring 10, or can be an inclined plane relative to the axis of the first outer ring 10, so as to reduce the processing difficulty of the connecting beam 440. In some possible implementations, the two side surfaces of the connecting beam 440 can each be an arc surface that is fitted with the rolling surface of the main thrust roller 510, for example, can be a cylindrical arc surface or a spherical arc surface. In this way, the contact area between the connecting beam 440 and the main thrust roller 510 can be increased, so as to improve the stability of the main thrust roller 510 when pushing the main thrust spacer 410 to move, and the lubrication between the main thrust roller 510 and the main thrust spacer 410 is easier, and the airflow passing is easier to reduce the air resistance, which is beneficial to the smooth passing of the main thrust roller 510 and the main thrust spacer 410. It can be understood that the two side surfaces of the connecting beam 440 can also be planes of other special shapes that are set according to the special working conditions of the slewing bearing, and details are not described herein again.

[0078] Reference is made to Figure 5 In the axial direction of the first outer ring 10, one side of the connecting beam 440 towards the first main thrust rolling surface 110 and / or the second main thrust rolling surface 310 is provided with a protruding portion 441 that is higher than the end surface of the first side beam 420 and the second side beam 430, and the protruding portion 441 is provided with a groove 442 that penetrates the protruding portion 441 in the direction of the connecting line of the first side beam 420 and the second side beam 430. The groove 442 enables the protruding portion 441 to have a certain elastic deformation capacity, and enables the protruding portion 441 to have a certain rigidity. Compared with the main thrust spacer being a rigid beam in the related art, after the main thrust spacer 410 of the embodiment of the present application contacts the main thrust roller 510, the protruding portion 441 is elastically deformed, and the collision impact force and the peak value between the main thrust roller 510 and the protruding portion 441 are reduced. At the same time, since the protruding portion 441 has a certain rigidity, the main thrust spacer 410 and the main thrust roller 510 can also be prevented from being damaged in the interaction.

[0079] Specifically, reference is made to Figure 6, in the related art, when the main pushing isolation block is a rigid beam, N represents the normal collision force of the main pushing roller 510 on the main pushing isolation block, T represents the tangential friction force of the main pushing roller 510 on the main pushing isolation block, and F represents the resultant force of the normal collision force N and the tangential friction force T. The contact point of the main pushing roller 510 and the main pushing raceway is taken as a fulcrum, and the force arm is s. According to the dynamics principle, the total moment of force of the main pushing roller 510 on the main pushing isolation block is s*F.

[0080] For the main pushing isolation block 410 in the embodiment of the present application, when the main pushing roller 510 collides with the protruding part 441, the protruding part 441 is elastically deformed. N' represents the normal collision force of the main pushing roller 510 on the main pushing isolation block 410, T' represents the tangential friction force of the main pushing roller 510 on the main pushing isolation block 410, and F' represents the resultant force of the normal collision force N' and the tangential friction force T'. The contact point of the main pushing roller 510 and the main pushing raceway is taken as a fulcrum, and the force arm is s'. According to the dynamics principle, the total moment of force of the main pushing roller 510 on the main pushing isolation block 410 is s'*F'.

[0081] In the working process of the slewing bearing in the embodiment of the present application, the main pushing roller 510 collides with the protruding part 441, so that the protruding part 441 is elastically deformed towards the direction of the groove 442. It can be known that Figure 7 Therefore, the total moment of force s'*F' is smaller than the total moment of force s*F in the related art. It can be known that, compared with the main pushing isolation block being a rigid beam in the related art, the main pushing isolation block 410 in the embodiment of the present application can reduce the collision impact force and the peak value between the main pushing roller 510 and the main pushing isolation block.

[0082] And according to the rolling slewing bearing dynamics theory and the tribology theory, when the friction coefficient is constant, the total force F' between the main pushing roller 510 and the main pushing isolation block 410 is smaller than the total force F between the main pushing roller 510 and the main pushing isolation block 410 in the related art, so the friction force between the main pushing roller 510 and the main pushing isolation block 410 is smaller than the friction force between the main pushing roller 510 and the main pushing isolation block 410 in the related art. Therefore, the slewing bearing in the embodiment of the present application can reduce the wear between the main pushing roller 510 and the main pushing isolation block 410, thereby prolonging the service life of the main pushing roller 510 and further ensuring the service life of the slewing bearing.

[0083] For example, the material of the main pushing isolation block 410 is a high polymer material, such as polytetrafluoroethylene, polyether ether ketone, nylon or the like. The material of the main pushing isolation block 410 can also be a metal material with good elasticity, such as brass or the like.

[0084] For reference Figure 1 And Figure 2The first outer ring 10 and the inner ring 30 can further form a radial rolling channel. The radial rolling channel is provided with the radial rolling assembly 60 to reduce the friction between the first outer ring 10 and the inner ring 30.

[0085] The inner side of the first outer ring 10 can further be provided with a first radial blocking surface 130, a first avoiding surface 140, a first radial limiting surface 150 and a first radial rolling surface 160 connected in sequence. The first radial blocking surface 130 is connected to the first main pushing rolling surface 110 and perpendicular to the first main pushing sliding surface 120. The first avoiding surface 140 is perpendicular to the first radial blocking surface 130, and the distance between the first avoiding surface 140 and the outer side of the first outer ring 10 is smaller than the distance between the first main pushing sliding surface 120 and the outer side of the first outer ring 10. That is, the first radial blocking surface 130 and the first avoiding surface 140 form an avoiding space to avoid the radial rolling assembly 60, so as to prevent the radial rolling assembly 60 from interfering with the first outer ring 10. The first radial limiting surface 150 is perpendicular to the first avoiding surface 140, and the first radial limiting surface 150 is used to limit the radial rolling assembly 60. The first radial rolling surface 160 is perpendicular to the first radial limiting surface 150.

[0086] With reference to Figure 1 And Figure 3 The outer side of the inner ring 30 is further provided with a second radial rolling surface 330 connected to the second main pushing rolling surface 310 and perpendicular to the second main pushing rolling surface 310. The second radial rolling surface 330 is opposite to the first radial rolling surface 160.

[0087] With reference to Figure 1 And Figure 4 The outer ring of the slewing support can further include a second outer ring 20, the axis of the second outer ring 20 coincides with the axis of the first outer ring 10, and the second outer ring 20 is connected to the first outer ring 10. The end surface of the first outer ring 10 facing the second outer ring 20 is provided with a connecting protrusion 170, and the end surface of the second outer ring 20 facing the first outer ring 10 is provided with a connecting groove 210 which can be sleeved on the connecting protrusion 170. In some implementations of the first embodiment of the present application, the positions of the connecting protrusion 170 and the connecting groove 210 can be interchanged, that is, the connecting protrusion 170 is arranged on the end surface of the second outer ring 20 facing the first outer ring 10, and the connecting groove 210 is arranged on the end surface of the first outer ring 10 facing the second outer ring 20. The second outer ring 20 and the first outer ring 10 are connected through the connecting groove 210 and the connecting protrusion 170. The second outer ring 20 and the first outer ring 10 can also be connected through connecting bolts, which will not be described herein.

[0088] The inner side of the second outer ring 20 can be provided with a second radial limiting surface 220, a second avoiding surface 230 and a second radial blocking surface 240 connected in sequence. The second radial limiting surface 220 can be an end surface of the second outer ring 20 facing the first outer ring 10, and the second radial limiting surface 220 and the first radial limiting surface are used for limiting the radial rolling assembly 60. The second avoiding surface 230 is perpendicular to the second radial limiting surface 220. The second radial blocking surface 240 is perpendicular to the second avoiding surface 230, and the second radial blocking surface 240 and the second avoiding surface 230 form an avoiding space to avoid the radial rolling assembly 60, thereby preventing the radial rolling assembly 60 from interfering with the second outer ring 20. The second radial blocking surface 240, the second avoiding surface 230, the second radial limiting surface 220, the first radial rolling surface 160, the first radial limiting surface 150, the first avoiding surface 140, the first radial blocking surface 130 and the second radial rolling surface 330 surround to form a radial rolling channel.

[0089] The radial rolling assembly 60 is located in the radial rolling channel. Exemplarily, the radial rolling assembly 60 can include a radial retainer 610 and radial rollers 620. The radial retainer 610 is located in the radial rolling channel, and the radial retainer 610 has a plurality of pockets. The number of radial rollers 620 is multiple, and the multiple radial rollers 620 are respectively installed in the plurality of pockets of the radial retainer 610. The rolling surface of the radial roller 620 abuts against the first radial rolling surface 160 and the second radial rolling surface 330. When the inner ring 30 rotates relative to the first outer ring 10 and the second outer ring 20, the radial roller 620 rolls on the first radial rolling surface 160 and the second radial rolling surface 330, thereby reducing the friction between the inner ring 30 and the first outer ring 10. The first radial limiting surface 150 and the second radial limiting surface 220 respectively abut against the two end surfaces of the radial roller 620 to limit the radial roller 620, thereby avoiding the radial roller 620 from being skewed when rolling.

[0090] Reference Figure 1 , Figure 3 and Figure 4The first rolling surface further comprises a first auxiliary pushing rolling surface 260. The first sliding surface further comprises a first auxiliary pushing sliding surface 250. The first auxiliary pushing rolling surface 260 and the first auxiliary pushing sliding surface 250 are arranged on the inner side of the second outer ring 20. The first auxiliary pushing sliding surface 250 is perpendicular to the axis of the second outer ring 20 and connected with the second radial blocking surface 240. The first auxiliary pushing rolling surface 260 is connected with the first auxiliary pushing sliding surface 250 and perpendicular to the first auxiliary pushing sliding surface 250. Exemplarily, the second outer ring 20 can be provided with a first accommodating groove 261, the groove bottom of the first accommodating groove 261 is provided with a second accommodating groove 262, and the second accommodating groove 262 is arranged with an elastic element 263. For example, the elastic element 263 can be a spring or a disc spring. The first accommodating groove 261 is arranged with a floating ring 264, and the floating ring 264 abuts against the elastic element 263. The surface of the floating ring 264 away from the elastic element 263 is the first auxiliary pushing rolling surface 260.

[0091] The second rolling surface of the inner ring 30 further comprises a second auxiliary pushing rolling surface 340. The second auxiliary pushing rolling surface 340 is perpendicular to the axis of the inner ring 30. The second sliding surface of the inner ring 30 further comprises a second auxiliary pushing sliding surface 350. The second auxiliary pushing sliding surface 350 is opposite to the first auxiliary pushing sliding surface 250. The guide protrusion can comprise a second guide protrusion 351, which can be arranged on the second auxiliary pushing sliding surface 350. The second auxiliary pushing rolling surface 340, the second auxiliary pushing sliding surface 350, the first auxiliary pushing rolling surface 260 and the first auxiliary pushing sliding surface 250 surround to form an auxiliary pushing rolling channel.

[0092] The spacer block 40 further comprises an auxiliary pushing spacer block 450. The auxiliary pushing spacer block 450 can be multiple, and the multiple auxiliary pushing spacer blocks 450 are arranged in the auxiliary pushing rolling channel at intervals. One side of the auxiliary pushing spacer block 450 is provided with a second guide groove 451, for example Figure 1 As shown, the second guide groove 451 is arranged on the side of the auxiliary pushing spacer block 450 facing the second auxiliary pushing sliding surface 350, and the second guide groove 451 is sleeved on the second guide protrusion 351.

[0093] The roller can comprise an auxiliary pushing roller 520, and the auxiliary pushing roller 520 can be multiple. The multiple auxiliary pushing rollers 520 are located in the auxiliary pushing rolling channel, and each auxiliary pushing roller 520 is located between two adjacent auxiliary pushing spacer blocks 450. The rolling surface of each auxiliary pushing roller 520 abuts against the two adjacent auxiliary pushing spacer blocks 450, and the rolling surface of each auxiliary pushing roller 520 abuts against the first auxiliary pushing rolling surface 260 and the second auxiliary pushing rolling surface 340. Exemplarily, the auxiliary pushing roller 520 can be a ball, a roller or a needle.

[0094] When the second outer ring 20 and the inner ring 30 rotate relative to each other, the auxiliary push roller 520 rolls in the auxiliary push raceway to be in rolling contact with the first auxiliary push rolling surface 260 and the second auxiliary push rolling surface 340, thereby reducing the friction between the first auxiliary push rolling surface 260 and the second auxiliary push rolling surface 340. When the auxiliary push roller 520 rolls, the auxiliary push spacer 450 is pushed to slide relative to the first auxiliary push rolling surface 260 and the second auxiliary push rolling surface 340, the second guide groove 451 of the auxiliary push spacer 450 is sleeved on the second guide protrusion 351, and the matched second guide protrusion 351 and the second guide groove 451 limit and guide the auxiliary push spacer 450, so as to avoid the auxiliary push spacer 450 from being skewed, thereby avoiding the auxiliary push spacer 450 from interfering with the inner ring 30 and the second outer ring 20, preventing the main push spacer 410 from being stuck between the inner ring 30 and the second outer ring 20, and making the inner ring 30 and the second outer ring 20 unable to rotate relative to each other, and improving the reliability of the slewing bearing.

[0095] Exemplarily, the other one of the second sliding surface and the first sliding surface can be provided with at least one oil storage groove configured to store lubricating oil. For example Figure 1 As shown, the oil storage groove can include a second oil storage groove 251, and the number of the second oil storage groove 251 can be at least one. The at least one second oil storage groove 251 can be arranged on the first auxiliary push sliding surface 250. The second oil storage groove 251 can be used to store lubricating oil, so that a lubricating oil passage is formed between the auxiliary push spacer 450 and the first auxiliary push sliding surface 250, the lubricating effect between the auxiliary push spacer 450 and the first auxiliary push sliding surface 250 is enhanced, and the wear between the auxiliary push spacer 450 and the first auxiliary push sliding surface 250 is reduced.

[0096] The at least one second oil storage groove 251 means that the number of the second oil storage groove 251 can be one. The number of the second oil storage groove 251 can also be multiple, for example, three. The multiple second oil storage grooves 251 can reduce the contact area between the auxiliary push spacer 450 and the first auxiliary push sliding surface 250, reduce the friction between the auxiliary push spacer 450 and the first auxiliary push sliding surface 250, and improve the oil storage function of the second oil storage groove 251, thereby improving the lubricating effect between the auxiliary push spacer 450 and the first auxiliary push sliding surface 250.

[0097] Exemplarily, the auxiliary push spacer 450 has a central surface perpendicular to the axis of the second outer ring 20. The at least one second oil storage groove 251 can be symmetrically arranged relative to the central surface. In this way, the lubricating oil in the second oil storage groove 251 can be symmetrically distributed relative to the central surface of the auxiliary push spacer 450, the uniformity of the contact between the lubricating oil in the second oil storage groove 251 and the auxiliary push spacer 450 is improved, and the lubricating effect on the auxiliary push spacer 450 is improved.

[0098] For other structures of the auxiliary push isolating block 450, please refer to the above description of the main push isolating block 410, and the embodiments of the present application will not be repeated here.

[0099] The following description will be made with reference to the accompanying drawings. Figure 1 The assembly process of the slewing bearing of the first embodiment of the present application will be described in detail.

[0100] Step 11: Place the first outer ring 10 steadily.

[0101] For example, the first outer ring 10 is placed on a horizontal work surface, and the installation environment should ensure good lighting conditions and be free from dust and water vapor.

[0102] Step 12: Install the main push isolating block 410, so that the first guide groove 421 of the main push isolating block 410 is sleeved on the first guide protrusion 121 on the first main push sliding surface 120.

[0103] For example, the main push isolating block 410 is placed on the first main push rolling surface 110 of the first outer ring 10. The main push isolating block 410 can be pushed in the horizontal direction, so that the first guide groove 421 of the main push isolating block 410 is sleeved on the first guide protrusion 121 on the first main push sliding surface 120. For example, the first guide groove 421 can be in close contact with the first guide protrusion 121, so as to reserve assembly space for the subsequent installation of the inner ring 30 and avoid interference between the inner ring 30 and the main push isolating block 410.

[0104] Step 13: Install the main push roller 510 between adjacent main push isolating blocks 410.

[0105] For example, the mass of the main push roller 510 is generally large, and a buffer such as a rubber pad can be placed on the first main push rolling surface 110 before placing the main push roller 510, so as to avoid damaging the first main push rolling surface 110 when the main push roller 510 falls.

[0106] Step 14: Install the inner ring 30.

[0107] For example, the axis of the inner ring 30 should be as coincident as possible with the axis of the first outer ring 10, so as to form a uniform radial rolling channel and facilitate the subsequent assembly of the radial rolling assembly 60. In addition, interference between the inner ring 30 and the main push isolating block 410 can be avoided, so as to prevent damage to the inner ring 30 and the main push isolating block 410 and affect the service life of the slewing bearing.

[0108] When placing the inner ring 30, the inner ring 30 can be allowed to fall slowly, so as to avoid rigid collision between the inner ring 30 and the main push isolating block 410 and the main push roller 510 due to movement of the main push isolating block 410 and the main push roller 510, and damage to the first main push rolling surface 110, the second main push rolling surface 310, or the rolling surface of the main push roller 510.

[0109] Step 15: Place the radial retainer 610 and the radial roller 620.

[0110] Exemplarily, the radial retainer 610 and the radial roller 620 can be assembled using an auxiliary tooling to ensure the assembly precision of the radial retainer 610 and the radial roller 620, and to avoid damage to the radial retainer 610 and the radial roller 620.

[0111] Step 16: Install the auxiliary pushing spacer 450, so that the second guide groove 451 of the auxiliary pushing spacer 450 is sleeved on the second guide protrusion 351 of the second auxiliary pushing sliding surface 350.

[0112] Exemplarily, the auxiliary pushing spacer 450 is placed on the second auxiliary pushing rolling surface 340 of the inner ring 30. The auxiliary pushing spacer 450 can be pushed in the horizontal direction, so that the second guide groove 451 of the auxiliary pushing spacer 450 is sleeved on the second guide protrusion 351 of the second auxiliary pushing sliding surface 350. Exemplarily, the second guide groove 451 can be in close contact with the second guide protrusion 351, so as to reserve assembly space for subsequent installation of the second outer ring 20, and to avoid interference between the second outer ring 20 and the auxiliary pushing spacer 450.

[0113] Step 17: Install the auxiliary pushing roller 520 between adjacent auxiliary pushing spacers 450.

[0114] Exemplarily, the auxiliary pushing roller 520 generally has a large mass, and a buffer such as a rubber pad can be placed on the second auxiliary pushing rolling surface 340 before the auxiliary pushing roller 520 is installed, so as to avoid damage to the second auxiliary pushing rolling surface 340 when the auxiliary pushing roller 520 falls.

[0115] Step 18: Assemble the floating ring 264 into the second outer ring 20.

[0116] Exemplarily, the elastic member 263 can be placed in the second accommodating groove 262 of the second outer ring 20, and then the floating ring 264 is placed in the first accommodating groove 261, and the floating ring 264 abuts against the elastic member 263. When the floating ring 264 is assembled, it should be placed stably, and the axis of the floating ring 264 should coincide with the axis of the second outer ring 20.

[0117] Step 19: Install the second outer ring 20.

[0118] Exemplarily, when the second outer ring 20 is assembled, the axis of the second outer ring 20 coincides with the axis of the first outer ring 10, so as to avoid interference between the second outer ring 20 and the auxiliary pushing roller 520 and the inner ring 30.

[0119] Exemplarily, when installing the second outer ring 20, the second outer ring 20 should be slowly lowered, and the connecting groove 210 of the second outer ring 20 should be sleeved on the connecting protrusion 170 of the first outer ring 10, so as to avoid rigid collision between the floating ring 264 and the auxiliary push roller 520, and cause damage to the first auxiliary push rolling surface 260 or the auxiliary push roller 520.

[0120] Exemplarily, the second outer ring 20 and the first outer ring 10 can also be connected through connecting bolts. For example, a torque wrench can be used to cross-fix the connecting bolts, so as to prevent damage to the connecting bolts or deformation of the first outer ring 10 and the second outer ring 20.

[0121] Second embodiment

[0122] Reference Figure 8 、 Figure 9 、 Figure 10 and Figure 11 The second embodiment of the present application provides a slewing bearing, which is different from the slewing bearing of the first embodiment of the present application in that a radial rolling channel is formed between the second outer ring 20 and the inner ring 30. The first radial rolling surface 160 is arranged on the inner side of the second outer ring 20. The first radial rolling surface 160 on the inner side of the second outer ring 20 is opposite to the second radial rolling surface 330 of the inner ring 30, so as to be surrounded by the second radial blocking surface 240, the second avoiding surface 230, the second radial limiting surface 220, the first radial limiting surface 150, the first avoiding surface 140 and the first radial blocking surface 130 to form a radial rolling channel.

[0123] Referring to Figures 8 to 11 In the auxiliary push roller way, the second guide protrusion 351 is arranged on the first auxiliary push sliding surface 250 of the second outer ring 20, and the second oil storage groove 251 is arranged on the first auxiliary push sliding surface 250 of the inner ring 30. Correspondingly, the second guide groove 451 is arranged on the side of the auxiliary push isolation block 450 facing the first auxiliary push sliding surface 250. In the assembly process of the slewing bearing of the second embodiment of the present application, the second outer ring 20 is provided first, the auxiliary push isolation block 450 is installed on the second outer ring 20, and then the inner ring 30 is installed. When the auxiliary push isolation block 450 is assembled, the auxiliary push isolation block 450 can be placed on the first auxiliary push rolling surface 260, and then the auxiliary push isolation block 450 is pushed from the direction perpendicular to the axis of the second outer ring 20, so that the second guide groove 451 is sleeved on the second guide protrusion 351 on the first auxiliary push sliding surface 250. The second guide protrusion 351 can play a role of preliminary positioning for the auxiliary push isolation block 450, and can improve the position accuracy of the auxiliary push isolation block 450, thereby improving the assembly accuracy of the slewing bearing. In addition, when the inner ring 30 is subsequently assembled, the axis of the inner ring 30 only needs to be adjusted to coincide with the axis of the second outer ring 20, and then the inner ring 30 is lowered, thereby improving the convenience of assembling and adjusting the inner ring 30.

[0124] In the main pushing raceway, the first guide protrusion 121 is arranged on the second main pushing sliding surface 320. The first oil storage groove 321 is arranged on the second main pushing sliding surface 320. Correspondingly, the first guide groove 421 is arranged on one side of the main pushing isolator 410 facing the second main pushing sliding surface 320. In the assembly process of the slewing bearing of the second embodiment of the present application, the second outer ring 20 is provided first, the inner ring 30 and the radial rolling assembly 60 are mounted on the second outer ring 20, then the main pushing isolator 410 and the main pushing roller 510 are assembled, and finally the first outer ring 10 is assembled. When assembling the main pushing isolator 410, the main pushing isolator 410 can be placed on the second main pushing rolling surface 310, and then the first guide groove 421 is sleeved on the first guide protrusion 121 on the second main pushing sliding surface 320 from the direction perpendicular to the axis of the inner ring 30. The first guide protrusion 121 can preliminarily position the main pushing isolator 410, improve the position accuracy of the main pushing isolator 410, and thus improve the assembly accuracy of the slewing bearing. In addition, when subsequently assembling the first outer ring 10, it is only necessary to adjust the axis of the first outer ring 10 to coincide with the axis of the inner ring 30 and then lower the first outer ring 10, thereby improving the convenience of assembling the first outer ring 10.

[0125] The other structures in the slewing bearing of the second embodiment of the present application can refer to the related description of the first embodiment of the present application, which will not be repeated here.

[0126] Reference will be made below to Figure 8 The assembly process of the slewing bearing of the second embodiment of the present application will be described in detail.

[0127] Step 21: Place the second outer ring 20 stably.

[0128] For example, the second outer ring 20 is placed on a horizontal work surface, and the installation environment should ensure good lighting conditions and be free from dust and water vapor.

[0129] Step 22: Assemble the floating ring 264 to the second outer ring 20.

[0130] For example, the elastic member 263 can be placed in the second accommodating groove 262 of the second outer ring 20 first, and then the floating ring 264 is placed in the first accommodating groove 261, with the floating ring 264 abutting against the elastic member 263. The floating ring 264 should be placed stably during assembly, and the axis of the floating ring 264 should coincide with the axis of the second outer ring 20.

[0131] Step 23: Install the auxiliary pushing isolator 450, so that the second guide groove 451 of the auxiliary pushing isolator 450 is sleeved on the second guide protrusion 351 of the first auxiliary pushing sliding surface 250.

[0132] Exemplarily, the auxiliary pushing isolation block 450 is placed on the first auxiliary pushing rolling surface 260 of the floating ring 264. The auxiliary pushing isolation block 450 can be pushed in the horizontal direction, so that the second guide groove 451 of the auxiliary pushing isolation block 450 is sleeved on the second guide protrusion 351 of the first auxiliary pushing sliding surface 250. Exemplarily, the second guide groove 451 can be in close contact with the second guide protrusion 351, so as to reserve an assembly space for the subsequent installation of the inner ring 30, and avoid interference between the inner ring 30 and the auxiliary pushing isolation block 450.

[0133] Step 24: Install the auxiliary pushing roller 520 between adjacent auxiliary pushing isolation blocks 450.

[0134] Exemplarily, the mass of the auxiliary pushing roller 520 is generally large, and a buffer such as a rubber pad can be placed on the first auxiliary pushing rolling surface 260 before the auxiliary pushing roller 520 is placed, so as to avoid damage to the first auxiliary pushing rolling surface 260 when the auxiliary pushing roller 520 falls.

[0135] Step 25: Install the inner ring 30.

[0136] Exemplarily, the axis of the inner ring 30 should coincide with the axis of the second outer ring 20 as much as possible, so as to form a uniform radial rolling channel, facilitate the subsequent assembly of the radial rolling assembly 60, and avoid interference between the inner ring 30 and the auxiliary pushing isolation block 450, damage to the inner ring 30 and the auxiliary pushing isolation block 450, and affect the service life of the slewing bearing.

[0137] After the axis of the inner ring 30 coincides with the axis of the second outer ring 20, the inner ring 30 can be slowly lowered, so as to avoid rigid collision between the auxiliary pushing isolation block 450 and the auxiliary pushing roller 520 caused by movement of the auxiliary pushing isolation block 450 and the auxiliary pushing roller 520, and damage to the rolling surfaces of the first auxiliary pushing rolling surface 260, the second auxiliary pushing rolling surface 340, or the auxiliary pushing roller 520.

[0138] Step 26: Install the radial retainer 610 and the radial roller 620.

[0139] Exemplarily, auxiliary tools can be used to assemble the radial retainer 610 and the radial roller 620, so as to ensure the assembly accuracy of the radial retainer 610 and the radial roller 620, and avoid damage to the radial retainer 610 and the radial roller 620.

[0140] Step 27: Install the main pushing isolation block 410, so that the first guide groove 421 of the main pushing isolation block 410 is sleeved on the first guide protrusion 121 on the second main pushing sliding surface 320.

[0141] Exemplarily, the main pushing spacer block 410 is placed on the second main pushing rolling surface 310 of the inner ring 30. The main pushing spacer block 410 can be pushed in the horizontal direction, so that the first guide groove 421 of the main pushing spacer block 410 is fitted with the first guide protrusion 121 on the second main pushing sliding surface 320, to reserve the assembly space for the subsequent installation of the first outer ring 10, and to avoid the interference between the first outer ring 10 and the main pushing spacer block 410.

[0142] Step 28: installing the main pushing roller 510 between the adjacent main pushing spacer blocks 410.

[0143] Exemplarily, the main pushing roller 510 generally has a large mass, and a buffer such as a rubber pad can be placed on the second main pushing rolling surface 310 before the main pushing roller 510 is placed, to avoid the damage to the second main pushing rolling surface 310 when the main pushing roller 510 falls.

[0144] Step 29: installing the first outer ring 10.

[0145] Exemplarily, when the first outer ring 10 is assembled, the axis of the first outer ring 10 coincides with the axis of the second outer ring 20, to avoid the interference between the first outer ring 10 and the main pushing roller 510 and the inner ring 30.

[0146] Exemplarily, after the axis of the first outer ring 10 coincides with the axis of the second outer ring 20, the first outer ring 10 can be slowly lowered, and the connecting groove 210 of the first outer ring 10 is sleeved on the connecting protrusion 170 of the second outer ring 20, to avoid the rigid collision between the first outer ring 10 and the main pushing roller 510, and to avoid the damage to the first main pushing rolling surface 110 or the main pushing roller 510.

[0147] Exemplarily, the first outer ring 10 and the second outer ring 20 can also be connected by the connecting bolts. For example, the torque wrench can be used to cross-fix the connecting bolts, to prevent the damage to the connecting bolts or the deformation of the first outer ring 10 and the second outer ring 20.

[0148] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A slewing bearing, characterized in that, It includes an outer ring, an inner ring, multiple rollers, and multiple spacers. The inner side of the outer ring is provided with a first rolling surface and a first sliding surface. The first rolling surface is perpendicular to the axis of the outer ring. The first sliding surface is connected to the first rolling surface and is perpendicular to the first rolling surface. The inner ring is located inside the outer ring. A second rolling surface and a second sliding surface are provided on the outer side of the inner ring. The second rolling surface is perpendicular to the axis of the inner ring. The second sliding surface is connected to the second rolling surface and is perpendicular to the second rolling surface. The second sliding surface, the second rolling surface, the first sliding surface, and the first rolling surface form a rolling channel. One of the first sliding surface and the second sliding surface is provided with a guide protrusion or a guide groove, while the other of the first sliding surface and the second sliding surface is not provided with the guide protrusion or the guide groove. The other of the first sliding surface and the second sliding surface is provided with at least one oil reservoir. Multiple isolation blocks are arranged at intervals in the rolling channel. One side of each isolation block is provided with a guide groove sleeved on the guide protrusion or a guide protrusion inserted into the guide groove, while the other side of the isolation block is not provided with the guide protrusion or the guide groove. Along the radial direction of the outer ring, the thickness of the guide protrusion is equal to the sum of the maximum radial displacement of the isolation block within the rolling channel and the first preset width; Each roller is located between two adjacent isolation blocks, and the rolling surface of each roller abuts against the two adjacent isolation blocks, and also abuts against the first rolling surface and the second rolling surface; The isolation block includes a first side beam, a connecting beam, and a second side beam. The connecting beam has a protrusion on the side facing the first rolling surface and / or the second rolling surface. The protrusion protrudes from the end faces of the first side beam and the second side beam. The protrusion is provided with a groove that penetrates the protrusion along the line connecting the first side beam and the second side beam.

2. The slewing bearing according to claim 1, characterized in that, There is an oil storage gap between the guide protrusion and the guide groove, and the oil storage gap is configured to store lubricating oil.

3. The slewing bearing according to claim 1, characterized in that, The first side beam is provided with the guide groove or the guide protrusion; The second side beam is spaced apart from and opposite to the first side beam; The connecting beam is located between the first side beam and the second side beam and connects the first side beam and the second side beam. The two sides of the connecting beam respectively abut against the rolling surfaces of the two adjacent rollers.

4. The slewing bearing according to claim 3, characterized in that, Both sides of the connecting beam are arc surfaces that fit in contact with the rolling surface of the roller.

5. The slewing bearing according to claim 3, characterized in that, Along the extension direction of the guide groove, both ends of the first side beam and the second side beam protrude from the connecting beam. The surface of the first side beam facing the second side beam, the side of the connecting beam, and the surface of the second side beam facing the first side beam enclose a receiving space for accommodating the roller.

6. The slewing bearing according to any one of claims 1-5, characterized in that, The material of the isolation block is polytetrafluoroethylene, polyetheretherketone, nylon or brass.

7. The slewing bearing according to any one of claims 1-5, characterized in that, The other of the first sliding surface and the second sliding surface is provided with at least one oil reservoir, which is configured to store lubricating oil.

8. The slewing bearing according to claim 7, characterized in that, The isolation block has a central surface that is perpendicular to the axis of the outer ring; at least one of the oil storage tanks is symmetrically arranged relative to the central surface.

9. The slewing bearing according to any one of claims 1-5, characterized in that, The outer ring includes a first outer ring; the first rolling surface includes a first main pushing rolling surface; the first sliding surface includes a first main pushing sliding surface; both the first main pushing rolling surface and the first main pushing sliding surface are disposed on the inner side of the first outer ring, and the first main pushing rolling surface is perpendicular to the axis of the first outer ring; the first main pushing sliding surface and the first main pushing rolling surface are connected and perpendicular to the first main pushing rolling surface; The second rolling surface includes a second main pushing rolling surface, which is perpendicular to the axis of the inner ring; the second sliding surface includes a second main pushing sliding surface, which is connected to and perpendicular to the second main pushing rolling surface; the second main pushing sliding surface, the second main pushing rolling surface, the first main pushing sliding surface, and the first main pushing rolling surface form a main pushing rolling channel; one of the first main pushing sliding surface and the second main pushing sliding surface is provided with a first guide protrusion or a first guide groove; The isolation block includes multiple main push isolation blocks, which are arranged at intervals in the main push rolling channel. One side of each main push isolation block is provided with a first guide groove sleeved on the first guide protrusion or a first guide protrusion inserted into the first guide groove. Alternatively, the outer ring includes a second outer ring; the first rolling surface includes a first auxiliary rolling surface; the first sliding surface includes a first auxiliary sliding surface; both the first auxiliary rolling surface and the first auxiliary sliding surface are disposed on the inner side of the second outer ring, and the first auxiliary rolling surface is perpendicular to the axis of the second outer ring; the first auxiliary sliding surface and the first auxiliary rolling surface are connected and perpendicular to the first auxiliary rolling surface; The second rolling surface includes a second auxiliary rolling surface, which is perpendicular to the axis of the inner ring; the second sliding surface includes a second auxiliary sliding surface, which is connected to and perpendicular to the second auxiliary rolling surface; the second auxiliary sliding surface, the second auxiliary rolling surface, the first auxiliary sliding surface, and the first auxiliary rolling surface form an auxiliary rolling channel. One of the first auxiliary sliding surface and the second auxiliary sliding surface is provided with a second guide protrusion or a second guide groove; The isolation block includes multiple auxiliary push isolation blocks, which are arranged at intervals in the auxiliary push rolling channel. One side of each auxiliary push isolation block is provided with a second guide groove sleeved on the second guide protrusion or a second guide protrusion inserted into the second guide groove.

Images