Circulating oil lubricating device of cycloid differential and using method of circulating oil lubricating device
By designing a gas-liquid atomizer and mixing structure, the impact kinetic energy of the gas-liquid mixture is used to achieve stirring and uniform mixing, solving the problem of gas-liquid stratification in traditional lubrication systems, improving the lubrication uniformity and efficiency of the cycloidal differential, and preventing wear.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ZHANGCHEN HEAVY IND (SUZHOU) CO LTD
- Filing Date
- 2026-03-05
- Publication Date
- 2026-05-08
AI Technical Summary
In traditional gas-liquid lubrication systems, the stratification phenomenon caused by the difference in density and viscosity between gas and lubricating oil leads to stratification when the gas-liquid two-phase flow enters the atomization unit, resulting in gas enrichment and accelerated wear on the meshing surfaces of the cycloidal differential friction pair.
It employs a gas-liquid atomizer and a mixing structure. Through the linkage of the guiding structure and the mixing device, it utilizes the impact kinetic energy of the gas-liquid mixture to achieve stirring and uniform mixing. Combined with a buffer device to counteract vibration, it ensures uniform spraying of the lubricating medium.
It significantly improves the lubrication uniformity of the cycloidal differential friction pair, prevents wear on the meshing surface, improves lubrication efficiency and mixing uniformity, and avoids insufficient lubrication of the friction pair caused by uneven local medium concentration.
Smart Images
Figure CN121993582A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of differential lubrication technology, specifically to a circulating oil lubrication device for a cycloidal differential and its usage method. Background Technology
[0002] The circulating oil lubrication device of the cycloidal differential is a special system that provides forced lubricating oil circulation for the differential mechanism of the cycloidal pinwheel differential, which adopts the cycloidal pin tooth meshing and planetary transmission principle. It is mainly used to solve the lubrication and cooling problems of the cycloidal differential under harsh working conditions such as high load, high speed and continuous operation. The cycloidal differential is specifically developed for use with horizontal spiral discharge filter centrifuges. Currently, the maximum output torque of the cycloidal differential used in the centrifuge industry is 9000 Nm. However, with the development of the industry, some users have put forward higher requirements for the maximum output torque of the differential, requiring it to reach 14000 Nm. The outer diameter of the machine is controlled within 550 mm, the maximum output torque reaches 14000 Nm, the single-stage transmission speed ratio is 43 or 59, the whole machine speed is about 600 rpm, and the dynamic balance parameter requirements are met. In traditional gas-liquid lubrication systems, the gas-liquid mixing stage generally adopts a simple convergence structure with a straight channel connection. Due to the significant differences in physical properties such as density and viscosity between gas and lubricating oil, gas has a low density and high fluidity, and can easily flow quickly through the convergence area, while lubricating oil has a high density and high viscosity, and its flow rate is relatively slow. During the simple convergence process, it is difficult to overcome the stratification tendency caused by the density difference, and obvious gas-liquid stratification phenomenon with gas on top and lubricating oil at the bottom is very likely to occur. When the gas-liquid two-phase flow in this stratified state enters the subsequent atomization unit, the gas enrichment section in the stratified area will experience dry atomization. When this uneven oil mist is sprayed onto the friction pairs of equipment such as cycloidal differentials, it will aggravate the wear of some meshing surfaces. Therefore, a circulating oil lubrication device for a cycloidal differential and its usage method are proposed to address the above problems. Summary of the Invention
[0003] The purpose of this invention is to provide a circulating oil lubrication device for a cycloidal differential and its usage method, so as to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, the present invention provides the following technical solution: A circulating oil lubrication device for a cycloidal differential and its usage method are disclosed. The device includes a cycloidal differential and a mounting bracket. A gas-liquid atomizer is fixed to the upper end of the mounting bracket. The input ends of the gas-liquid atomizer are fixedly connected to an air compressor and a micro-oil pump. A gas-liquid mixing structure is fixed inside the gas-liquid atomizer. The gas-liquid mixing structure includes a cavity. An arc-shaped cavity and a contraction cavity are fixed to both ends of the cavity. A connecting pipe is fixed to one end of the contraction cavity. A limit tube is fixed to the lower end of the connecting pipe. A nozzle is fixed to the lower end of the limit tube. A buffer device is fixed to the outside of the nozzle. The outside of the buffer device is fixedly connected to the inner wall of the cycloidal differential. The cavity includes a stirring chamber. Diagonally arranged fixing plates are fixed to both ends of the inner side of the stirring chamber. A mixing device rotates at the right-angle end of the fixing plate. A guide block is fixed to the outside of the fixing plate at the end of the mixing device near the arc-shaped cavity. A guide structure rotates through a bearing at the end of the stirring chamber near the arc-shaped cavity.
[0005] As a further optimization of the present invention, the shrinkage cavity is conical in shape, with the diameter of the end near the cavity body being the same as the diameter of the stirring cavity, and the diameter of the end away from the cavity body being the same as the diameter of the connecting pipe. The sidewall of the shrinkage cavity is inclined, and its inclination direction is towards the central axis of the connecting pipe.
[0006] As a further optimization of the present invention, the lower end of the nozzle passes through the housing of the cycloidal differential, and an oil and gas recovery channel is fixedly provided on the bottom inner side of the cycloidal differential. One end of the oil and gas recovery channel is fixedly connected to a micro oil pump.
[0007] As a further optimization of the present invention, the limiting tube is embedded in the housing of the cycloidal differential, and the limiting tube is movably connected to the housing of the cycloidal differential.
[0008] As a further optimization of the present invention, the buffer device includes an elastic chamber, a hydraulic cavity is provided inside the elastic chamber, a buffer rod is slidably connected inside the hydraulic cavity, and one end of the straight rod of the buffer rod is fixedly connected to the outside of the nozzle.
[0009] As a further optimization of the present invention, the mixing device includes a rotating shaft, a spiral blade fixed on the outer side of the rotating shaft, and a through hole on the inner side of the spiral blade.
[0010] As a further optimization of the present invention, the guide structure includes a connecting shaft, a rotating plate fixed inside the connecting shaft, and a slot opened on the outside of the rotating plate, with the rotating plate located at the lower end of the slot in contact with the guide block.
[0011] As a further optimization of the present invention, the number of rotating plates is two, the two rotating plates are symmetrically distributed with the connecting shaft as the center, the shape of the rotating plates is arc-shaped, and the curvature of the rotating plates is adapted to the curvature of the inner wall of the arc-shaped cavity.
[0012] As a further optimization of the present invention, one end of the straight rod of the buffer rod is vertically fixed to the outer side wall of the nozzle, and the other end of the buffer rod is slidably embedded in the inner side of the hydraulic chamber, with its sliding direction perpendicular to the central axis of the nozzle.
[0013] A method for using a circulating oil lubrication device for a cycloidal differential: S1: First, start the gas-liquid atomizer on the mounting bracket through the external wire, and simultaneously turn on the air compressor and the micro oil pump. The air compressor inputs gas into the arc-shaped cavity of the gas-liquid mixing structure, and the micro oil pump inputs lubricating oil into the gas-liquid mixing structure. The two enter the arc-shaped cavity together and converge. S2: Oil and gas impact one side of the rotating plate from one end of the arc cavity. The gas impact causes the rotating plate to drive the connecting shaft to rotate continuously along the bearing. When the rotating plate rotates, the slot on its outer side will synchronously drive the guide block that is in contact with it, thereby driving the rotating shaft of the mixing device to rotate with the right-angle end of the fixed plate. Because the rotating plate and the guide block are in intermittent contact, the rotation of the guide structure will drive the driving mixing device to rotate repeatedly in small amplitude. S3: When the shaft of the mixing device rotates, the spiral blades on its outer side rotate synchronously with the shaft, and perform spiral stirring of the gas-liquid mixture flowing into the stirring chamber from the arc-shaped cavity. At the same time, the perforations on the inner side of the spiral blades allow some gas-liquid mixture to pass through, breaking the gas-liquid stratification state and performing preliminary uniform mixing. S31: Two fixed plates diagonally distributed inside the stirring chamber guide the flow direction of the gas-liquid mixture, causing the mixture to flow through the spiral blade area of the mixing device. Subsequently, the gas-liquid mixture flows along the contraction chamber, completing the uniform mixing within the gas-liquid mixing structure. S4: The uniformly mixed gas-liquid mixture enters the connecting pipe through the contraction chamber, and is then guided to the nozzle by the limiting tube. Finally, it is atomized by the nozzle and sprayed into the friction pair area of the cycloidal differential. S5: Oil mist that is not adsorbed by the friction pair will accumulate inside the cycloidal differential and then flow into the input end of the micro oil pump along the oil and gas recovery channel at the bottom of the inner side. During this process, the gas-liquid mixing structure, mixing device and guiding structure maintain continuous linkage to realize the circulation supply of lubricating medium.
[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, by setting up a gas-liquid atomizer to simultaneously connect to an air compressor and a micro oil pump, and cooperating with the stirring and guiding linkage of the gas-liquid mixing structure, the problem of uneven gas-liquid mixing and gas-liquid stratification in traditional lubrication methods is solved, which significantly improves the lubrication uniformity of the cycloidal differential friction pair and prevents aggravated wear on the meshing surface. 2. In this invention, the mixing device can perform spiral turbulence stirring of the gas-liquid mixture when its spiral blades rotate with the shaft. With the perforation, some of the medium can penetrate the blades, effectively breaking the gas-liquid stratification state and greatly improving the mixing uniformity. This avoids the problem of insufficient lubrication of the friction pair caused by uneven local medium concentration in traditional lubrication. At the same time, the device relies on the intermittent linkage with the guide structure and does not require an additional power source. It can achieve small-amplitude reciprocating stirring only through the impact kinetic energy of the gas-liquid mixture. 3. In this invention, the guide structure can uniformly receive the impact kinetic energy of the gas-liquid mixture, ensure the smoothness of the connecting shaft rotation, and avoid structural wear caused by unilateral force. At the same time, the groove on the outside of the rotating plate makes intermittent contact with the guide block of the mixing device, converting its own rotational kinetic energy into the reciprocating stirring power of the mixing device. 4. In this invention, the buffer device can specifically counteract the radial vibration of the differential during operation, avoid nozzle spray deviation caused by vibration transmission, and ensure that the oil mist accurately and evenly covers the friction pair. At the same time, the medium buffer of the hydraulic chamber and the reset support of the elastic chamber effectively absorb the vibration impact force. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the disassembled structure of the cycloidal differential of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the stirring chamber of the present invention; Figure 4 This is a top view of the cavity structure of the present invention; Figure 5 This is a schematic diagram of the installation position of the guide block in this invention; Figure 6 This is a schematic diagram of the overall structure of the mixing device of the present invention; Figure 7 This is a schematic diagram of the overall structure of the guiding structure of the present invention; Figure 8 For the present invention Figure 2 Schematic diagram of the structure at point A in the middle; Figure 9 This is a schematic cross-sectional view of the elastic chamber and limiting tube of the present invention.
[0016] In the diagram: 1. Cycloidal differential; 2. Air compressor; 3. Micro oil pump; 4. Mounting bracket; 5. Gas-liquid atomizer; 6. Gas-liquid mixing structure; 61. Cavity; 611. Stirring chamber; 612. Fixing plate; 613. Mixing device; 6131. Rotating shaft; 6132. Spiral blade; 6133. Perforation; 614. Guide block; 615. Guide structure; 6151. Connecting shaft; 6152. Rotating plate; 6153. Groove; 62. Arc-shaped cavity; 63. Contraction cavity; 64. Connecting pipe; 65. Limiting tube; 66. Nozzle; 67. Buffer device; 671. Elastic chamber; 672. Hydraulic chamber; 673. Buffer rod; 7. Oil and gas recovery channel. Detailed Implementation
[0017] Please see Figures 1-9 The present invention provides a technical solution: A circulating oil lubrication device for a cycloidal differential and its usage method include a cycloidal differential 1 and a mounting bracket 4. A gas-liquid atomizer 5 is fixed to the upper end of the mounting bracket 4. The input ends of the gas-liquid atomizer 5 are fixedly connected to an air compressor 2 and a micro-oil pump 3. A gas-liquid mixing structure 6 is fixed inside the gas-liquid atomizer 5. The gas-liquid mixing structure 6 includes a cavity 61, with an arc-shaped cavity 62 and a contraction cavity 63 fixed to its two ends respectively. A connecting pipe 64 is fixed to one end of the contraction cavity 63, and a limit tube 65 is fixed to the lower end of the connecting pipe 64. A nozzle 66 is fixed at the lower end of the 5th section, and a buffer device 67 is fixed on the outside of the nozzle 66. The outside of the buffer device 67 is fixedly connected to the inner wall of the cycloidal differential 1. The cavity 61 includes a stirring chamber 611. Two diagonally arranged fixing plates 612 are fixed at the two ends of the inner side of the stirring chamber 611. A mixing device 613 is rotatably mounted on the right-angle end of the fixing plate 612. A guide block 614 is fixed to the outside of the fixing plate 612 at the end of the mixing device 613 near the arc-shaped cavity 62. A guide structure 615 is rotatably mounted on the end of the stirring chamber 611 near the arc-shaped cavity 62 via a bearing.
[0018] The contraction chamber 63 is conical in shape. The diameter of the end near the chamber 61 is the same as the diameter of the stirring chamber 611, and the diameter of the end away from the chamber 61 is the same as the diameter of the connecting pipe 64. The side wall of the contraction chamber 63 is inclined, and its inclination direction is towards the central axis of the connecting pipe 64. The lower end of the nozzle 66 passes through the outer shell of the cycloidal differential 1. An oil and gas recovery channel 7 is fixed at the bottom of the inner side of the cycloidal differential 1. One end of the oil and gas recovery channel 7 is fixedly connected to the micro oil pump 3. The outer side of the limiting tube 65 is embedded in the outer shell of the cycloidal differential 1, and the outer side of the limiting tube 65 is movably connected to the outer shell of the cycloidal differential 1. The contraction chamber 63 adopts a conical structure that matches the diameter of the mixing chamber 611 and the connecting pipe 64, and the side wall is inclined towards the axis of the connecting pipe 64. This allows the flow velocity of the gas-liquid mixture to be steadily increased during the flow process, avoiding turbulence and energy loss caused by sudden changes in flow velocity, and ensuring the uniformity of the gas-liquid mixture. The design of the nozzle 66 passing through the outer shell allows the atomized oil mist to be directly and accurately sprayed onto the friction pair area of the cycloidal differential 1, avoiding the dispersion loss of oil mist in the outer shell and improving lubrication efficiency. The embedded housing design positions the nozzle 66, ensuring that the initial spray direction of the nozzle 66 is accurately directed towards the friction pair. The movable connection allows the nozzle 66 to make small angle adjustments with the vibration of the cycloidal differential 1, expanding the lubrication coverage of the oil mist, while avoiding damage to the nozzle 66 caused by the rigid connection. The buffer device 67 includes an elastic chamber 671, a hydraulic chamber 672 is provided inside the elastic chamber 671, and a buffer rod 673 is slidably connected inside the hydraulic chamber 672. One end of the straight rod of the buffer rod 673 is fixedly connected to the outside of the nozzle 66, and the other end of the straight rod of the buffer rod 673 is vertically fixed to the outer wall of the nozzle 66. The other end of the buffer rod 673 is slidably embedded in the inside of the hydraulic chamber 672, and its sliding direction is perpendicular to the central axis of the nozzle 66. The sliding of the buffer rod 673 along the hydraulic chamber 672 can effectively absorb the vibration and impact force when the cycloidal differential 1 is working, avoid the vibration from being transmitted to the nozzle 66 and causing spray deviation, and ensure the uniformity of lubrication. The combined structure of the elastic chamber 671 and the hydraulic chamber 672 not only plays a buffering and protection role, but also assists the buffer rod 673 in resetting, and extends the service life of the nozzle 66. The mixing device 613 includes a rotating shaft 6131, a spiral blade 6132 fixed on the outside of the rotating shaft 6131, and a through hole 6133 opened on the inside of the spiral blade 6132. The spiral blade 6132 rotates with the shaft 6131 to perform spiral stirring of the gas-liquid mixture, breaking the gas-liquid stratification state. The perforation 6133 on the inner side of the spiral blade 6132 allows some of the mixture to pass through, further enhancing the mutual penetration of gas and liquid. The guide structure 615 includes a connecting shaft 6151, a rotating plate 6152 fixed inside the connecting shaft 6151, and a slot 6153 opened on the outer side of the rotating plate 6152. The rotating plate 6152 located at the lower end of the slot 6153 contacts the guide block 614. There are two rotating plates 6152, which are symmetrically distributed with the connecting shaft 6151 as the center. The rotating plate 6152 is arc-shaped, and the curvature of the rotating plate 6152 matches the curvature of the inner wall of the arc cavity 62. The mixing device 613 is driven to rotate repeatedly in small amplitudes by the kinetic energy of the gas-liquid impact rotating plate 6152. No additional motor drive is required. The intermittent contact allows the mixing device 613 to form a reciprocating stirring action, which effectively breaks the stable stratification of gas and liquid and improves the mixing effect. The symmetrically distributed rotating plates 6152 can evenly receive the impact of the gas-liquid mixture, making the rotation of the connecting shaft 6151 more stable. The design of the curvature of the rotating plate 6152 and the arc cavity 62 maximizes the use of the kinetic energy of the gas-liquid impact, improves the rotation efficiency of the guide structure 615, and thus enhances the stirring effect of the mixing device 613.
[0019] Workflow: First, the gas-liquid atomizer 5 on the mounting bracket 4 is started via an external wire, simultaneously turning on the air compressor 2 and the micro-oil pump 3. The air compressor 2 inputs gas into the arc-shaped cavity 62 of the gas-liquid mixing structure 6, and the micro-oil pump 3 inputs lubricating oil into the arc-shaped cavity 62. The two converge in the arc-shaped cavity 62 to form a gas-liquid mixture. Since the curvature of the rotating plate 6152 of the guide structure 615 matches the curvature of the inner wall of the arc-shaped cavity 62, the gas-liquid mixture will precisely impact one side of the rotating plate 6152. With the thrust of the airflow, the rotating plate 6152 and the connecting shaft 6151 are driven to rotate continuously along the bearing at the end of the stirring chamber 611, completing the power triggering of the guide structure 615. During this process, the curved surface structure of the arc-shaped cavity 62 and the curvature of the rotating plate 6152 are matched and matched to ensure that the kinetic energy of the oil-gas impact is efficiently converted into the rotational energy of the rotating plate 6152. When the rotating plate 6152 of the guide structure 615 rotates, the slot 6153 on its outer side will make intermittent contact with the guide block 614 of the mixing device 613: when the slot 6153 rotates with the rotating plate 6152 to the position of the guide block 614, it will push the guide block 614 to deflect synchronously, thereby driving the rotating shaft 6131 of the mixing device 613 to rotate along the right-angle end of the fixed plate 612; when the slot 6153 leaves the guide block 614, the rotating shaft 6131 will reset with the slight vibration of the cycloidal differential 1, ultimately causing the mixing device 613 to perform a small-amplitude repeated rotation action; Meanwhile, the two fixed plates 612 diagonally distributed inside the stirring chamber 611 guide the flow direction of the gas-liquid mixture, causing the mixture to flow concentratedly through the spiral blade 6132 area of the mixing device 613. When the rotating shaft 6131 rotates, the spiral blade 6132 will perform spiral stirring of the gas-liquid mixture, and the perforation 6133 inside the spiral blade 6132 will allow some of the mixture to pass through, breaking the gas-liquid stratification state. This process is the transfer and coordination of the rotational energy of the guide structure 615 to the stirring energy of the mixing device 613. At the same time, the fixed plate 612 and the spiral blade 6132 form a synergy of guiding and stirring, realizing the initial uniform mixing of gas and liquid. After initial mixing, the gas-liquid mixture flows along the stirring chamber 611. The flow velocity is gradually increased by the conical structure of the contraction chamber 63. Then, it is transported to the limiting tube 65 through the connecting pipe 64. The limiting tube 65 is embedded in the outer shell of the cycloidal differential 1, which will accurately guide the flow direction of the mixture, so that the mixture is stably transported to the nozzle 66 and atomized. When nozzle 66 sprays oil mist into the friction pair of cycloidal differential 1, the vibration generated by the operation of cycloidal differential 1 will be transmitted to nozzle 66. At this time, the buffer rod 673 of buffer device 67 will slide along the hydraulic chamber 672 inside the elastic chamber 671. The medium in the hydraulic chamber 672 will absorb the vibration impact force. At the same time, the elastic structure of elastic chamber 671 will drive the buffer rod 673 to reset. During this process, buffer device 67 and nozzle 66 form a vibration buffer and direction self-adaptation cooperation, allowing nozzle 66 to slightly adjust the spray angle according to the impact force, ensuring that the oil mist evenly covers the friction pair area. Oil mist that is not adsorbed by the friction pair will accumulate inside the cycloidal differential 1, and then flow back to the input end of the micro oil pump 3 along the oil and gas recovery channel 7 at the bottom of the inner side, realizing the recycling of the lubricating medium. During this process, each component maintains stable operation of circulating oil lubrication.
[0020] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. 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 the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.
Claims
1. A circulating oil lubrication device for a cycloidal differential, comprising a cycloidal differential (1) and a mounting bracket (4), characterized in that: The upper end of the mounting bracket (4) is fixed with a gas-liquid atomizer (5). The input end of the gas-liquid atomizer (5) is fixedly connected to the air compressor (2) and the micro oil pump (3). The gas-liquid atomizer (5) is fixed with a gas-liquid mixing structure (6) inside. The gas-liquid mixing structure (6) includes a cavity (61), with an arc-shaped cavity (62) and a contraction cavity (63) fixed at both ends of the cavity (61). A connecting pipe (64) is fixed at one end of the contraction cavity (63), and a limit tube (65) is fixed at the lower end of the connecting pipe (64). A nozzle (66) is fixed at the lower end of the limit tube (65), and a buffer device (67) is fixed on the outside of the nozzle (66). The outside of the buffer device (67) is fixedly connected to the inner wall of the cycloidal differential (1). The cavity (61) includes a stirring chamber (611). Two diagonally arranged fixing plates (612) are fixed at both ends of the inner side of the stirring chamber (611). A mixing device (613) is rotatably mounted on the right-angle end of the fixing plate (612). A guide block (614) is fixed to the outside of the fixing plate (612) at one end of the mixing device (613) near the arc-shaped cavity (62). A guide structure (615) is rotatably mounted on the end of the stirring chamber (611) near the arc-shaped cavity (62) via a bearing.
2. The circulating oil lubrication device for a cycloidal differential according to claim 1, characterized in that: The shrinkage chamber (63) is cone-shaped. The diameter of the end near the chamber (61) is the same as the diameter of the stirring chamber (611), and the diameter of the end away from the chamber (61) is the same as the diameter of the connecting pipe (64). The sidewall of the shrinkage chamber (63) is inclined, and its inclination direction is towards the central axis of the connecting pipe (64).
3. The circulating oil lubrication device for a cycloidal differential according to claim 1, characterized in that: The lower end of the nozzle (66) passes through the housing of the cycloidal differential (1). An oil and gas recovery channel (7) is fixed on the bottom inner side of the cycloidal differential (1). One end of the oil and gas recovery channel (7) is fixedly connected to the micro oil pump (3).
4. The circulating oil lubrication device for a cycloidal differential according to claim 1, characterized in that: The outer side of the limiting tube (65) is embedded in the housing of the cycloidal differential (1), and the outer side of the limiting tube (65) is movably connected to the housing of the cycloidal differential (1).
5. The circulating oil lubrication device for a cycloidal differential according to claim 1, characterized in that: The buffer device (67) includes an elastic chamber (671), a hydraulic chamber (672) is provided inside the elastic chamber (671), a buffer rod (673) is slidably connected inside the hydraulic chamber (672), and one end of the straight rod of the buffer rod (673) is fixedly connected to the outside of the nozzle (66).
6. The circulating oil lubrication device for a cycloidal differential according to claim 1, characterized in that: The mixing device (613) includes a rotating shaft (6131), a spiral blade (6132) is fixed on the outside of the rotating shaft (6131), and a through hole (6133) is provided on the inside of the spiral blade (6132).
7. The circulating oil lubrication device for a cycloidal differential according to claim 1, characterized in that: The guide structure (615) includes a connecting shaft (6151), a rotating plate (6152) is fixed inside the connecting shaft (6151), and a slot (6153) is opened on the outside of the rotating plate (6152). The rotating plate (6152) located at the lower end of the slot (6153) is in contact with the guide block (614).
8. The circulating oil lubrication device for a cycloidal differential according to claim 7, characterized in that: There are two rotating plates (6152), which are symmetrically distributed around the connecting shaft (6151). The rotating plates (6152) are arc-shaped, and the curvature of the rotating plates (6152) matches the curvature of the inner wall of the arc cavity (62).
9. The circulating oil lubrication device for a cycloidal differential according to claim 5, characterized in that: One end of the straight rod of the buffer rod (673) is vertically fixed to the outer wall of the nozzle (66), and the other end of the buffer rod (673) is slidably embedded in the inner side of the hydraulic chamber (672), with its sliding direction perpendicular to the central axis of the nozzle (66).
10. A method of using the circulating oil lubrication device for a cycloidal differential according to any one of claims 1-9, characterized in that: S1: First, start the gas-liquid atomizer (5) on the mounting bracket (4) through the external wire, and simultaneously turn on the air compressor (2) and the micro oil pump (3). The air compressor (2) inputs gas into the arc cavity (62) of the gas-liquid mixing structure (6), and the micro oil pump (3) inputs lubricating oil into the gas-liquid mixing structure (6). The two enter the arc cavity (62) and converge. S2: Oil and gas impact one side of the rotating plate (6152) from one end of the arc cavity (62). The gas impact causes the rotating plate (6152) to drive the connecting shaft (6151) to rotate continuously along the bearing. When the rotating plate (6152) rotates, the slot (6153) on its outer side will synchronously drive the guide block (614) in contact with it, thereby driving the rotating shaft (6131) of the mixing device (613) to rotate with the right-angle end of the fixed plate (612). Because the rotating plate (6152) and the guide block (614) are in intermittent contact, the rotation of the guide structure (615) will drive the driving mixing device (613) to rotate repeatedly in small amplitude. S3: When the shaft (6131) of the mixing device (613) rotates, the spiral blade (6132) on its outer side rotates synchronously with the shaft, and performs spiral stirring on the gas-liquid mixture flowing into the stirring chamber (611) from the arc cavity (62). At the same time, the perforation (6133) on the inner side of the spiral blade (6132) allows some gas-liquid mixture to pass through, breaking the gas-liquid stratification state and performing preliminary uniform mixing. S31: Two fixed plates (612) diagonally distributed inside the stirring chamber (611) guide the flow direction of the gas-liquid mixture, causing the mixture to flow through the spiral blade area of the mixing device (613). Subsequently, the gas-liquid mixture flows along the contraction chamber (63) to complete the uniform mixing within the gas-liquid mixing structure (6). S4: The uniformly mixed gas-liquid mixture enters the connecting pipe (64) through the contraction chamber (63), and is then transported to the nozzle (66) through the guiding action of the limiting pipe (65). Finally, it is atomized by the nozzle (66) and sprayed into the friction pair area of the cycloidal differential (1). S5: Oil mist that is not adsorbed by the friction pair will accumulate inside the cycloidal differential (1) and then flow into the input end of the micro oil pump (3) along the oil and gas recovery channel (7) at the bottom of the inner side. During this process, the gas-liquid mixing structure (6), the mixing device (613), and the guiding structure (615) maintain continuous linkage to realize the circulation supply of lubricating medium.