Swivel mechanism and excavator

Abstract

The utility model relates to excavator rotary mechanism lubrication technical field, concretely relates to a rotary mechanism and excavator. In the rotary mechanism, the outer periphery part of second rotary gear is engaged with the outer periphery part of first rotary gear, the outer periphery part of lubricating gear is engaged with the outer periphery part of second rotary gear, and lubricating gear is equipped with flow channel structure;Lubricating gear can smear the grease flowing from flow channel structure to the outer periphery part of second rotary gear;The grease of the outer periphery part of second rotary gear can be applied to the outer periphery part of first rotary gear. Through the lubricating gear engaged with second rotary gear, the grease can be accurately supplemented to the meshing part of first rotary gear and second rotary gear, avoids the situation that the rotary mechanism lacks the grease, makes the rotary mechanism keep good lubrication state for a long time to prevent the service life of rotary mechanism from reducing.

Description

Technical Field

[0001] This utility model relates to the field of lubrication technology for excavator slewing mechanisms, specifically to a slewing mechanism and an excavator. Background Technology

[0002] An excavator consists of a lower body and an upper body. The lower body is used for moving on the ground, while the upper body is used for performing digging operations. The lower body and the upper body are connected by a slewing mechanism, which allows the upper body to rotate relative to the lower body to adjust its position for digging operations.

[0003] To reduce friction and wear during the meshing transmission of the slewing mechanism, the grease pumping mechanism of the upper body periodically sprays grease onto the meshing transmission parts of the slewing mechanism via an injector. However, the injector is often far from the meshing transmission parts of the slewing mechanism, and is sometimes affected by external wind interference and high-speed operation of the meshing transmission parts. As a result, the injector often fails to accurately spray grease onto the meshing transmission parts of the slewing mechanism, leading to insufficient grease in the slewing mechanism, poor lubrication, and thus reduced service life. Utility Model Content

[0004] In order to solve or at least partially solve the above-mentioned technical problems, this utility model provides a slewing mechanism and an excavator.

[0005] This utility model provides a rotary mechanism, which includes a first rotary gear, a second rotary gear, and a gear lubrication structure. The first rotary gear is fixedly connected to the lower body, and the outer periphery of the second rotary gear meshes with the outer periphery of the first rotary gear. The second rotary gear is rotatably connected to the upper body and can be driven to rotate by the drive device of the upper body. The gear lubrication structure includes a lubrication gear, the outer periphery of which meshes with the outer periphery of the second rotary gear. The lubrication gear has a flow channel structure that guides grease provided by a grease pumping mechanism to the outer periphery of the lubrication gear. Based on the meshing transmission between the second rotary gear and the lubrication gear, the lubrication gear can apply grease flowing from the flow channel structure to the outer periphery of the second rotary gear. Based on the meshing transmission between the second rotary gear and the first rotary gear, the grease on the outer periphery of the second rotary gear can be applied to the outer periphery of the first rotary gear.

[0006] In some embodiments, the width of the meshing teeth of the lubricating gear is greater than or equal to the width of the meshing teeth of the second rotary gear; and / or, the outer diameter of the lubricating gear is smaller than the outer diameter of the second rotary gear; and / or, the ratio of the number of meshing teeth of the lubricating gear to the number of meshing teeth of the second rotary gear is 1:2-2:3; and / or, the width of the meshing teeth of the second rotary gear is greater than or equal to the width of the meshing teeth of the first rotary gear.

[0007] In some embodiments, the gear lubrication structure includes two lubrication gears, which are arranged to be spaced apart.

[0008] In some embodiments, the two lubrication gears are distributed in an axisymmetric manner, and the axis of symmetry between the two lubrication gears is the line connecting the center of the first rotary gear and the center of the second rotary gear.

[0009] In some embodiments, the gear lubrication structure includes a mounting base, which includes a connecting plate, a connecting shaft, and a sleeve. The lubrication gear is fixedly sleeved on the sleeve, the sleeve is rotatably sleeved on the connecting shaft, the end of the connecting shaft is fixedly connected to the connecting plate, and the connecting plate can be installed on the upper body of the vehicle.

[0010] In some embodiments, the connecting shaft is provided with a central flow channel extending along its axial direction, which can communicate with a grease pumping mechanism. The outer side of the connecting shaft is provided with a plurality of first oil guide grooves, all of which are spaced apart axially on the connecting shaft. The first oil guide grooves are connected to the central flow channel through a first channel. The outer periphery of the sleeve is provided with a plurality of second oil guide grooves, all of which are spaced apart axially on the connecting shaft. All second oil guide grooves correspond one-to-one with all first oil guide grooves. The second oil guide grooves are connected to the corresponding first oil guide grooves through second channels, which are provided in the sleeve. The second oil guide grooves are connected to the flow channel structure.

[0011] In some embodiments, two sealing rings are provided between the connecting shaft and the sleeve, and all first oil guide grooves are provided between the two sealing rings; and / or, one end of the central flow channel is blocked, and a connector is provided at the other end of the central flow channel, the connector being connected to the delivery pipe, and the delivery pipe being connected to the grease pumping mechanism.

[0012] In some embodiments, the meshing teeth of the lubricating gear are defined as third meshing teeth; the flow channel structure includes a plurality of distribution flow channels, all of which correspond one-to-one with all third meshing teeth; the distribution flow channels further include a plurality of conveying channels spaced apart along the connecting shaft, the conveying channels extending from the outer surface of the corresponding third meshing teeth to the inner side of the lubricating gear; all conveying channels correspond one-to-one with all second oil guide grooves, and the conveying channels communicate with the corresponding second oil guide grooves.

[0013] In some embodiments, the conveying channel includes a first channel, a second channel, and a third channel. One end of the first channel is connected to the corresponding second oil guide groove, and the other end of the first channel is disposed on the tooth tip surface of the corresponding third meshing tooth. One end of the second channel and one end of the third channel are respectively connected to the first channel, and the other ends of the second channel and the third channel are respectively disposed on the two tooth surfaces of the corresponding third meshing tooth.

[0014] This utility model also provides an excavator, which includes an upper body, a lower body, and a slewing mechanism as described in the above embodiment. A first slewing gear is fixedly connected to the lower body, and a second slewing gear is rotatably connected to the upper body. The grease pumping mechanism of the upper body is connected to the flow channel structure of the lubrication gear to pump grease into the flow channel structure.

[0015] The above-mentioned technical solution of this utility model has the following beneficial effects: The lubrication gear has a flow channel structure. A grease pumping mechanism pumps grease into this flow channel structure, allowing it to flow along the channel to the outer periphery of the gear. When the second rotating gear rotates, it drives the lubrication gear to rotate synchronously. The meshing teeth of the lubrication gear continuously apply the grease flowing out of the flow channel to the outer periphery of the second rotating gear. The meshing teeth of the second rotating gear then continuously apply grease from its outer periphery to the outer periphery of the first rotating gear. Thus, through the lubrication gear meshing with the second rotating gear, grease can be accurately replenished to the meshing points of the first and second rotating gears, preventing grease deficiency in the rotating mechanism and maintaining good lubrication over a long period, thereby preventing a reduction in the service life of the rotating mechanism. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the installation of the rotary mechanism in one embodiment of the present invention; Figure 2 This is a schematic diagram showing the connection of the first rotary gear, the second rotary gear, and the lubrication gear in one embodiment of this utility model; Figure 3 and Figure 4 This is a three-dimensional schematic diagram of a gear lubrication structure in one embodiment of the present invention; Figure 5 and Figure 6 This is a schematic diagram of the connection between the lubricating gear and the mounting base in one embodiment of this utility model; Figure 7 This is a three-dimensional schematic diagram of the connecting shaft in one embodiment of the present invention; Figure 8 This is a three-dimensional schematic diagram of the sleeve in one embodiment of the present invention.

[0017] Explanation of reference numerals in the attached figures 1. First rotary gear; 11. First meshing tooth; 2. Second rotary gear; 12. Second meshing tooth; 3. Gear lubrication structure; 31. Lubricating gear; 311. Flow channel structure; 312. Distribution flow channel; 313. Conveying channel; 314. First channel; 315. Second channel; 316. Third channel; 317. Third meshing tooth; 32. Mounting base; 321. Connecting plate; 322. Connecting shaft; 3221. Limiting flange; 323. Sleeve; 3231. Limiting ring; 3232. Limiting groove; 324. Central flow channel; 325. First oil guide groove; 326. First channel; 327. Second oil guide groove; 328. Second channel; 329. Sealing ring; 33. Joint; 34. Conveying pipe; 4. Upper body. Detailed Implementation

[0018] The features and exemplary embodiments of various aspects of this utility model will now be described in detail. To make the objectives, technical solutions, and advantages of this utility model clearer, the following description, in conjunction with the accompanying drawings and specific embodiments, will provide a further detailed description. It should be understood that the specific embodiments described herein are intended only to explain this utility model and not to limit it. For those skilled in the art, this utility model can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this utility model by illustrating examples of it.

[0019] like Figures 1 to 6 As shown, this utility model provides a rotary mechanism, which includes a first rotary gear 1, a second rotary gear 2, and a gear lubrication structure 3. The first rotary gear 1 is fixedly connected to the lower vehicle body, and the outer periphery of the second rotary gear 2 meshes with the outer periphery of the first rotary gear 1. The second rotary gear 2 is rotatably connected to the upper vehicle body 4 and can be driven to rotate by the drive device of the upper vehicle body 4. The gear lubrication structure 3 includes a lubrication gear 31, the outer periphery of which meshes with the outer periphery of the second rotary gear 2. The lubrication gear 31 is provided with a flow channel structure 311 that can guide the grease provided by the grease pumping mechanism to the outer periphery of the lubrication gear 31. Based on the meshing transmission between the second rotary gear 2 and the lubrication gear 31, the lubrication gear 31 can apply the grease flowing from the flow channel structure 311 to the outer periphery of the second rotary gear 2; based on the meshing transmission between the second rotary gear 2 and the first rotary gear 1, the grease on the outer periphery of the second rotary gear 2 can be applied to the outer periphery of the first rotary gear 1.

[0020] Specifically, the first rotary gear 1 is fixedly connected to the lower body, and the second rotary gear 2 is rotatably connected to the upper body 4. The outer periphery of the second rotary gear 2 meshes with the outer periphery of the first rotary gear 1, and the meshing portion of the first rotary gear 1 and the second rotary gear 2 forms the meshing transmission portion of the rotary mechanism. When the drive device of the upper body 4 drives the second rotary gear 2 to rotate, the second rotary gear 2 rotates around the first rotary gear 1, and at the same time, the second rotary gear 2 can drive the upper body 4 to rotate circumferentially. The outer periphery of the second rotary gear 2 also meshes with the outer periphery of the lubrication gear 31, so the second rotary gear 2 can also drive the lubrication gear 31 to rotate. The lubricating gear 31 is provided with a flow channel structure 311, which can be connected to the grease pumping mechanism of the upper body 4. Therefore, the grease pumping mechanism can pump grease into the flow channel structure 311. The flow channel structure 311 extends to the outer periphery of the lubricating gear 31, so the flow channel structure 311 can guide the grease to flow directly from the outer periphery of the lubricating gear 31.

[0021] The grease pumping mechanism pumps grease into the flow channel structure 311 of the lubricating gear 31, allowing the grease to flow further along the flow channel structure 311 to the outer periphery of the lubricating gear 31. When the second rotary gear 2 is driven to rotate, the lubricating gear 31 is driven to rotate synchronously, causing the meshing teeth of the lubricating gear 31 to continuously apply the grease flowing out of the flow channel structure 311 to the outer periphery of the second rotary gear 2. The meshing teeth of the second rotary gear 2 then continuously apply the grease from its outer periphery to the outer periphery of the first rotary gear 1. Therefore, by providing the lubricating gear 31 that meshes with the second rotary gear 2, the meshing parts of the first rotary gear 1 and the second rotary gear 2 can be accurately replenished with grease, meaning the meshing transmission parts of the rotary mechanism can be accurately replenished with grease. This prevents the rotary mechanism from lacking grease, ensuring that the rotary mechanism maintains good lubrication for a long time, thereby preventing a reduction in the service life of the rotary mechanism.

[0022] In this embodiment, the lubrication gear 31 is provided with a flow channel structure 311. The grease pumping mechanism pumps grease into the flow channel structure 311 of the lubrication gear 31, and the grease flows along the flow channel structure 311 to the outer periphery of the lubrication gear 31. When the second rotary gear 2 rotates, it drives the lubrication gear 31 to rotate synchronously. The meshing teeth of the lubrication gear 31 continuously apply the grease flowing out of the flow channel structure 311 to the outer periphery of the second rotary gear 2; the meshing teeth of the second rotary gear 2 then continuously apply the grease from its outer periphery to the outer periphery of the first rotary gear 1. Thus, through the lubrication gear 31 meshing with the second rotary gear 2, grease can be accurately replenished to the meshing parts of the first rotary gear 1 and the second rotary gear 2, avoiding the situation of insufficient grease in the rotary mechanism, keeping the rotary mechanism in a good lubrication state for a long time, thereby preventing a reduction in the service life of the rotary mechanism.

[0023] In some embodiments of this utility model, the width of the meshing teeth of the lubricating gear 31 is greater than or equal to the width of the meshing teeth of the second rotary gear 2.

[0024] Specifically, the meshing teeth of the lubricating gear 31 are wider, allowing the lubricating grease flowing out from the flow channel structure 311 to be fully applied to the outer periphery of the second rotary gear 2, thereby improving the lubrication status of the rotary mechanism.

[0025] like Figure 1 and Figure 2 As shown, in some embodiments of this utility model, the outer diameter of the lubrication gear 31 is smaller than the outer diameter of the second rotary gear 2.

[0026] Specifically, the outer diameter of the lubrication gear 31 is small, so the rotation cycle of the sliding gear is short. The grease flowing out from the flow channel structure 311 can be quickly applied to the outer periphery of the second rotating gear 2 by the lubrication gear 31, thereby improving lubrication efficiency and avoiding waste of grease.

[0027] In some embodiments of this utility model, the ratio of the number of meshing teeth of the lubricating gear 31 to the number of meshing teeth of the second rotary gear 2 is 1:2-2:3.

[0028] Specifically, since the number of meshing teeth of the lubrication gear 31 is relatively small, the outer diameter of the lubrication gear 31 can be set to be smaller, so that the rotation cycle of the lubrication gear 31 is shorter. The grease flowing out from the flow channel structure 311 can be quickly applied to the outer periphery of the second rotating gear 2 by the lubrication gear 31, thereby improving the lubrication efficiency and avoiding the waste of grease.

[0029] In some embodiments of this utility model, the width of the meshing teeth of the second rotary gear 2 is greater than or equal to the width of the meshing teeth of the first rotary gear 1.

[0030] Specifically, the meshing teeth of the first rotary gear 1 are defined as first meshing teeth 11, and the meshing teeth of the second rotary gear 2 are defined as second meshing teeth 12. The second meshing teeth 12 are relatively wider, and can cover a larger area, so that the grease on the outer periphery of the second rotary gear 2 can be fully applied to the outer periphery of the first rotary gear 1, thereby improving the lubrication of the rotary mechanism.

[0031] like Figure 1 and Figure 2 As shown, in some embodiments of this utility model, the gear lubrication structure 3 includes two lubrication gears 31, which are arranged to be spaced apart.

[0032] Specifically, the two lubrication gears 31 can apply grease to the outer periphery of the second rotary gear 2 at different positions, which can improve the application efficiency and effect of the grease.

[0033] like Figure 1 and Figure 2 As shown, in some embodiments of this utility model, the two lubrication gears 31 are distributed in an axisymmetric manner, and the axis of symmetry between the two lubrication gears 31 is the line connecting the center of the first rotary gear 1 and the center of the second rotary gear 2.

[0034] Specifically, with Figure 1 and Figure 2 For example, when the second rotary gear 2 rotates counterclockwise, the left lubrication gear 31 can apply grease to the second rotary gear 2, allowing the grease to be applied to the outer circumference of the first rotary gear 1 as quickly as possible. When the second rotary gear 2 rotates clockwise, the right lubrication gear 31 can apply grease to the second rotary gear 2, allowing the grease to be applied to the outer circumference of the first rotary gear 1 as quickly as possible. Therefore, by setting two lubrication gears 31, the grease can be applied to the outer circumference of the first rotary gear 1 more quickly, improving the lubrication effect between the second rotary gear 2 and the first rotary gear 1.

[0035] like Figures 3 to 6 As shown, in some embodiments of this utility model, the gear lubrication structure 3 includes a mounting base 32, the mounting base 32 includes a connecting plate 321, a connecting shaft 322 and a sleeve 323, the lubrication gear 31 is fixedly sleeved on the sleeve 323, the sleeve 323 is rotatably sleeved on the connecting shaft 322, the end of the connecting shaft 322 is fixedly connected to the connecting plate 321, and the connecting plate 321 can be installed on the upper body 4.

[0036] Specifically, the connecting shaft 322 can be connected to the upper body 4 via the connecting plate 321. The lubrication gear 31 and the sleeve 323 can rotate relative to the connecting shaft 322, so that the lubrication gear 31 can rotate relative to the upper body 4. By providing the mounting base 32, the lubrication gear 31 is rotatably connected to the upper body 4.

[0037] Of course, the lubrication gear 31 can also be rotatably connected to the upper body 4 in other ways, and this utility model does not impose any restrictions.

[0038] In some embodiments, the number of mounting bases 32 is the same as the number of lubrication gears 31, with each lubrication gear 31 being matched with one mounting base 32.

[0039] In some embodiments, such as Figure 6 and Figure 7 As shown, one end of the connecting shaft 322 is provided with a limiting flange 3221, and the sleeve 323 is located between the limiting flange 3221 and the connecting plate 321. In some embodiments, such as Figure 6 and Figure 8 As shown, the outer periphery of the sleeve 323 is provided with two limiting grooves 3232, the limiting grooves 3232 surround the connecting shaft 322, and the limiting grooves 3232 are provided with limiting rings 3231 in the middle. The two axial sides of the lubricating gear 31 are respectively connected to the two limiting rings 3231, so that the lubricating gear 31 is restricted between the two limiting grooves 3232.

[0040] like Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, in some embodiments of this utility model, the connecting shaft 322 is provided with a central flow channel 324 extending along its axial direction. The central flow channel 324 can communicate with the grease pumping mechanism. The outer side of the connecting shaft 322 is provided with a plurality of first oil guide grooves 325. All the first oil guide grooves 325 are distributed at intervals along the axial direction of the connecting shaft 322. The first oil guide grooves 325 are connected to the central flow channel 324 through a first channel 326. The outer periphery of the sleeve 323 is provided with a plurality of second oil guide grooves 327. All the second oil guide grooves 327 are distributed at intervals along the axial direction of the connecting shaft 322. All the second oil guide grooves 327 correspond one-to-one with all the first oil guide grooves 325. The second oil guide grooves 327 are connected to the corresponding first oil guide grooves 325 through second channels 328. The second channels 328 are provided in the sleeve 323. The second oil guide grooves 327 are connected to the flow channel structure 311.

[0041] Specifically, the grease pumping mechanism pumps grease into the central flow channel 324. The grease in the central flow channel 324 then flows through the first channel 326 into the first oil guide groove 325. The grease in the first oil guide groove 325 then flows through the first channel 326 into the second oil guide groove 327. The grease in the second oil guide groove 327 flows through the flow channel structure 311 to the outer periphery of the lubrication gear 31. Through this arrangement, the lubrication gear 31 simultaneously delivers grease and rotates circumferentially.

[0042] like Figure 6 , Figure 7 and Figure 8 As shown, in some embodiments of this utility model, two sealing rings 329 are provided between the connecting shaft 322 and the sleeve 323, and all first oil guide grooves 325 are provided between the two sealing rings 329.

[0043] Specifically, the sealing ring 329 is annular, with its radially inner side fitted onto the connecting shaft 322, and the sleeve 323 fitted onto its radially outer side. Alternatively, the radially inner side of the sealing ring 329 can be embedded in the outer periphery of the connecting shaft 322, and the radially outer side can be embedded in the inner wall of the sleeve 323. The sealing ring 329 seals the gap between the connecting shaft 322 and the sleeve 323, preventing grease leakage between the ends of the connecting shaft 322 and the sleeve 323.

[0044] In some embodiments, two sealing rings 329 may be provided between the sleeve 323 and the lubrication gear 31, and all second oil guide grooves 327 are provided between the two sealing rings 329. The radial inner side of the sealing ring 329 can be embedded in the outer wall of the sleeve 323, and the radial outer side of the sealing ring 329 can be embedded in the inner side of the lubrication gear 31.

[0045] like Figure 3 , Figure 4 and Figure 6 As shown, in some embodiments of this utility model, one end of the central flow channel 324 is blocked, and the other end of the central flow channel 324 is provided with a connector 33, which is connected to the delivery pipe 34, and the delivery pipe 34 can be connected to the grease pumping mechanism.

[0046] Specifically, the grease pumping mechanism can deliver grease to the delivery pipe 34, and the grease enters the central flow channel 324 through the delivery pipe 34 and the connector 33. The connector 33 and the delivery pipe 34 facilitate communication between the central flow channel 324 and the grease pumping mechanism. Furthermore, the connector 33 is a common component in the art, and its structure will not be described in detail here.

[0047] like Figure 3 , Figure 4 and Figure 5 As shown, in some embodiments of this utility model, the meshing teeth of the lubrication gear 31 are defined as third meshing teeth 317; the flow channel structure 311 includes a plurality of distribution flow channels 312, all of which correspond one-to-one with all third meshing teeth 317; the distribution flow channel 312 further includes a plurality of conveying channels 313 distributed axially at intervals along the connecting shaft 322, the conveying channels 313 extending from the outer surface of the corresponding third meshing teeth 317 to the inner side of the lubrication gear 31; all of the conveying channels 313 correspond one-to-one with all the second oil guide grooves 327, and the conveying channels 313 are connected to the corresponding second oil guide grooves 327.

[0048] Specifically, the grease in the second oil guide groove 327 can flow to the outer surface of each third meshing tooth 317 through multiple distribution channels 312. Since the distribution channels 312 further include multiple delivery channels 313 distributed axially along the connecting shaft 322, this arrangement can expand the distribution range of the grease, so that the third meshing teeth 317 are fully coated with grease.

[0049] Of course, the flow channel structure 311 can also be any other structural form that can meet the requirements of this utility model, and this utility model does not limit it.

[0050] like Figure 5 As shown, in some embodiments of this utility model, the conveying channel 313 includes a first channel 314, a second channel 315, and a third channel 316. One end of the first channel 314 is connected to the corresponding second oil guide groove 327, and the other end of the first channel 314 is disposed on the tooth tip surface of the corresponding third meshing tooth 317. One end of the second channel 315 and one end of the third channel 316 are respectively connected to the first channel 314, and the other ends of the second channel 315 and the third channel 316 are respectively disposed on the two tooth surfaces of the corresponding third meshing tooth 317.

[0051] Specifically, the grease in the second oil guide groove 327 can flow to the tooth tip surface of the third meshing tooth 317 through the first channel 314. The grease in the second oil guide groove 327 can also flow to the two tooth surfaces of the third meshing tooth 317 through the second channel 315 and the third channel 316, so that the outer surface of the third meshing tooth 317 is fully coated with grease.

[0052] like Figure 1 and Figure 2 As shown, this utility model provides an excavator, which includes an upper body 4, a lower body, and a slewing mechanism as described in the above embodiment. A first slewing gear 1 is fixedly connected to the lower body, and a second slewing gear 2 is rotatably connected to the upper body 4. The grease pumping mechanism of the upper body 4 is connected to the flow channel structure 311 of the lubrication gear 31 to pump grease into the flow channel structure 311.

[0053] Specifically, the excavator uses the slewing mechanism described in the above embodiment, thus achieving the aforementioned technical effects.

[0054] It should be noted that the upper body 4, the lower body, the grease pumping mechanism, and the drive device of the upper body 4 are all common devices in the field. Those skilled in the art can refer to the prior art, and this utility model will not elaborate further.

[0055] It should also be noted that the specific connection method between the first rotary gear 1 and the lower vehicle body, and the specific connection method between the second rotary gear 2 and the upper vehicle body 4, are not improvements of this utility model. Those skilled in the art can refer to the prior art for understanding, and this utility model will not elaborate further.

[0056] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above are only preferred embodiments of this utility model. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this utility model, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of this utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A rotary mechanism, characterized in that, The system includes a first rotary gear (1), a second rotary gear (2), and a gear lubrication structure (3). The first rotary gear (1) is fixedly connected to the lower body, and the outer periphery of the second rotary gear (2) meshes with the outer periphery of the first rotary gear (1). The second rotary gear (2) is rotatably connected to the upper body (4) and can be driven to rotate by the drive device of the upper body (4). The gear lubrication structure (3) includes a lubrication gear (31), the outer periphery of which meshes with the outer periphery of the second rotary gear (2). The lubrication gear (31) is provided with a flow channel structure (311) that can guide the grease provided by the grease pumping mechanism to the outer periphery of the lubrication gear (31). Based on the meshing transmission between the second rotary gear (2) and the lubrication gear (31), the lubrication gear (31) can apply the grease flowing out of the flow channel structure (311) to the outer periphery of the second rotary gear (2); based on the meshing transmission between the second rotary gear (2) and the first rotary gear (1), the grease on the outer periphery of the second rotary gear (2) can be applied to the outer periphery of the first rotary gear (1).

2. The rotary mechanism according to claim 1, characterized in that, The width of the meshing teeth of the lubricating gear (31) is greater than or equal to the width of the meshing teeth of the second rotary gear (2); And / or, the outer diameter of the lubrication gear (31) is smaller than the outer diameter of the second rotary gear (2); And / or, the ratio of the number of meshing teeth of the lubricating gear (31) to the number of meshing teeth of the second rotary gear (2) is 1:2-2:3; And / or, the width of the meshing teeth of the second rotary gear (2) is greater than or equal to the width of the meshing teeth of the first rotary gear (1).

3. The rotary mechanism according to claim 1, characterized in that, The gear lubrication structure (3) includes two lubrication gears (31), which are arranged to be spaced apart.

4. The rotary mechanism according to claim 3, characterized in that, The two lubrication gears (31) are distributed in an axisymmetric manner, and the axis of symmetry between the two lubrication gears (31) is the line connecting the center of the first rotary gear (1) and the center of the second rotary gear (2).

5. The rotary mechanism according to any one of claims 1-4, characterized in that, The gear lubrication structure (3) includes a mounting base (32), which includes a connecting plate (321), a connecting shaft (322), and a sleeve (323). The lubrication gear (31) is fixedly sleeved on the sleeve (323), and the sleeve (323) is rotatably sleeved on the connecting shaft (322). The end of the connecting shaft (322) is fixedly connected to the connecting plate (321), and the connecting plate (321) can be installed on the upper body (4).

6. The rotary mechanism according to claim 5, characterized in that, The connecting shaft (322) is provided with a central flow channel (324) extending along its axial direction. The central flow channel (324) can communicate with the grease pumping mechanism. The outer side of the connecting shaft (322) is provided with a plurality of first oil guide grooves (325). All the first oil guide grooves (325) are distributed at intervals along the axial direction of the connecting shaft (322). The first oil guide grooves (325) communicate with the central flow channel (324) through first channels (326). The outer periphery of the sleeve (323) is provided with a plurality of A second oil guide groove (327) is distributed axially at intervals on the connecting shaft (322). All the second oil guide grooves (327) correspond one-to-one with all the first oil guide grooves (325). The second oil guide grooves (327) are connected to the corresponding first oil guide grooves (325) through a second channel (328). The second channel (328) is provided on the sleeve (323). The second oil guide grooves (327) are connected to the flow channel structure (311).

7. The rotary mechanism according to claim 6, characterized in that, Two sealing rings (329) are provided between the connecting shaft (322) and the sleeve (323), and all the first oil guide grooves (325) are provided between the two sealing rings (329); And / or, one end of the central flow channel (324) is blocked, and the other end of the central flow channel (324) is provided with a connector (33), the connector (33) is connected to the delivery pipe (34), and the delivery pipe (34) is connected to the grease pumping mechanism.

8. The rotary mechanism according to claim 6, characterized in that, The meshing tooth of the lubricating gear (31) is defined as the third meshing tooth (317). The flow channel structure (311) includes a plurality of distribution channels (312), each of which corresponds to one of the third meshing teeth (317); each distribution channel (312) further includes a plurality of conveying channels (313) spaced apart along the axial direction of the connecting shaft (322), each conveying channel (313) extending from the outer surface of the corresponding third meshing tooth (317) to the inner side of the lubrication gear (31); each of the conveying channels (313) corresponds to one of the second oil guide grooves (327), and each conveying channel (313) communicates with the corresponding second oil guide groove (327).

9. The rotary mechanism according to claim 8, characterized in that, The conveying channel (313) includes a first channel (314), a second channel (315) and a third channel (316). One end of the first channel (314) is connected to the corresponding second oil guide groove (327), and the other end of the first channel (314) is disposed on the tooth tip surface of the corresponding third meshing tooth (317). One end of the second channel (315) and one end of the third channel (316) are respectively connected to the first channel (314), and the other ends of the second channel (315) and the third channel (316) are respectively disposed on the two tooth surfaces of the corresponding third meshing tooth (317).

10. An excavator, characterized in that, The vehicle includes an upper body (4), a lower body, and a slewing mechanism as described in any one of claims 1-9. The first slewing gear (1) is fixedly connected to the lower body, and the second slewing gear (2) is rotatably connected to the upper body (4). The grease pumping mechanism of the upper body (4) is connected to the flow channel structure (311) of the lubrication gear (31) to pump grease into the flow channel structure (311).

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