Harmonic reducer with novel lubricating mode

Abstract

The invention relates to the technical field of harmonic reducers, and discloses a novel lubrication mode harmonic reducer which comprises a bottom shell and an outer shell, the connecting end of the bottom shell is connected with the outer shell, one end of the bottom shell is provided with an input connecting end, the output end of the outer shell is rotationally connected with an output connecting end, and an inner cavity of the outer shell is rotationally connected with a transmission shell. The output end of the transmission shell is connected with the input end of the output connecting end, a transmission set is arranged at the input end of the transmission shell and comprises a wave generator and a flexible gear, the output end of the flexible gear is meshed with the input end of the transmission shell, oil channels are formed in an inner cavity of the transmission shell and an inner cavity of the transmission set, and the two sets of oil channels are communicated. According to the harmonic reducer with the novel lubricating mode, the transmission contact face is prevented from being scratched by impurities, transmission precision is prevented from being affected by damage of transmission parts, the net sleeve is driven to rub with bristles when the transmission shell rotates, the impurities attached to the surface of the net sleeve can be brushed away in time, the net sleeve is prevented from being blocked, and circulation smoothness of lubricating oil is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of harmonic reducer technology, specifically a novel harmonic reducer with a new lubrication method. Background Technology

[0002] Harmonic reducers belong to the field of industrial transmission equipment and are widely used in automated machinery, precision transmission devices and other scenarios. Their core components include key parts such as transmission housing, transmission group and steel wheel. During operation, a specific lubrication mechanism is required to reduce friction loss between components. At the same time, impurities in the lubricating oil need to be effectively treated to ensure the stability of the overall transmission performance.

[0003] In existing technologies, harmonic reducers generally use grease lubrication. As a result, if the lubrication effect decreases during use, the device needs to be stopped before lubricating the internal components of the harmonic reducer. This affects the overall working efficiency of the device. At the same time, it is difficult to obtain comprehensive and uniform lubrication on the meshing surface and rotating contact surface between the steel wheel and the transmission housing, which leads to greater wear on the components, more noticeable noise during operation, limited overall transmission efficiency, and faster consumption of lubricating oil. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a novel lubrication method for harmonic reducers, which solves the technical problems of difficulty in obtaining comprehensive and uniform lubrication on the meshing and rotating contact surfaces between the steel wheel and the transmission housing, resulting in greater wear of components, more noticeable noise during operation, limited overall transmission efficiency, and rapid consumption of lubricating oil.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a novel lubrication-based harmonic reducer, comprising: a base shell and an outer shell, wherein the connecting end of the base shell is connected to the outer shell, one end of the base shell is provided with an input connecting end, the output end of the outer shell is rotatably connected to an output connecting end, the inner cavity of the outer shell is rotatably connected to a transmission shell, the output end of the transmission shell is connected to the input end of the output connecting end, the input end of the transmission shell is provided with a transmission assembly, the transmission assembly includes a wave generator and a flexible wheel, and the output end of the flexible wheel meshes with the input end of the transmission shell, and the inner cavities of both the transmission shell and the transmission assembly are provided with oil passages, and the two sets of oil passages are connected.

[0006] The transmission housing is fitted with a lower housing, and the two sides of the lower housing are respectively connected to a second one-way valve and a first one-way valve. The inner cavity of the transmission housing is provided with a steel wheel, and the steel wheel meshes with the transmission assembly. The outer sides of the second one-way valve and the first one-way valve are both fitted with a mesh sleeve, and the inner cavity of the lower housing is embedded with bristles, the position of which corresponds to the mesh sleeve. The bottom of the inner cavity of the lower shell is connected to a base plate. The load-bearing end of the base plate is connected to a cylinder. The output end of the cylinder is connected to a piston. The piston is slidably connected to the lower shell. The inner cavity of the piston is fitted with a guide plate. The guide plate is an annular metal disc. Its outer wall is tightly fitted to the inner wall of the lower shell. The inner wall and the protruding end of the piston are interference-fitted. The connection between the piston and the transmission assembly is provided with an anti-disengagement buckle. The anti-disengagement buckle is a snap-spring type structure, which is embedded in the annular groove of the piston and adapted to the slot of the transmission assembly. The top of the piston is provided with a transmission assembly. The output end of the transmission assembly is provided with an adjusting steel wheel. The outside of the lower shell is connected to an oil inlet.

[0007] The output end of the external transmission device is connected to the input connection end. The input connection end is driven by the transmission group and the steel wheel. The steel wheel drives the transmission housing to drive the output connection end. With the help of the meshing of the wave generator and the flexible wheel in the transmission group, the power transmission with a high reduction ratio is achieved. At the same time, the oil passage connecting the transmission housing and the transmission group provides a path for the circulation of lubricating oil, ensuring the lubrication coverage of key transmission components during the power transmission process. Lubricating oil is injected into the inner cavities of the transmission housing and the lower housing. When the cylinder is working, the starting cylinder drives the piston to move up and down. The reciprocating sliding of the piston changes the pressure in the inner cavity of the lower housing, and the lubricating oil inside the lower housing is discharged through the first one-way valve. The lubricating oil flows sequentially through the oil passage inside the outer shell, the oil passage of the transmission group, and the oil passage of the transmission housing, providing comprehensive lubrication to the meshing surfaces of the transmission group and the flexible wheel, the meshing surfaces of the steel wheel and the transmission group, and the rotating contact surfaces of the transmission housing and the output connection end. The lubricating oil circulation path is: lower housing to first one-way valve to outer shell oil passage to transmission group oil passage to transmission housing oil passage to each contact surface of the transmission to the return area of ​​the lower housing to the second one-way valve to the lower housing, forming a closed loop, reducing component wear and operating noise, and improving transmission efficiency. The lubricated oil is squeezed into the return area of ​​the lower housing corresponding to the input end of the second one-way valve under the action of pressure difference. Then, the negative pressure generated by the rotation of the steel wheel is drawn into the interior of the lower housing through the second one-way valve, thus forming a closed-loop circulation and reducing lubricating oil consumption. When lubricating oil is discharged through the first check valve or flows back into the lower housing through the second check valve, it is filtered by the mesh sleeve outside the corresponding check valve. This removes metal shavings and impurities caused by component wear, preventing impurities from scratching the transmission contact surface. At the same time, when the transmission housing rotates, the mesh sleeve rotates synchronously through the sleeve-fitting engagement with the transmission housing. This causes friction cleaning between the mesh sleeve and the fixed bristles, brushing away impurities attached to the surface of the mesh sleeve, preventing clogging, and ensuring smooth circulation of lubricating oil. The oil inlet is used to add new lubricating oil or replace the circulating oil, ensuring the continuous and stable operation of the lubrication system.

[0008] Preferably, a guide arm is connected between the piston and the base plate. The guide arm includes a hollow column and a sliding arm, which are slidably connected. The hollow column and the sliding arm are respectively connected to the base plate and the piston. The guide arm provides precise guidance for the up and down movement of the piston through the sliding cooperation of the hollow column and the sliding arm, avoiding the piston from deviating or getting stuck during the sliding process, ensuring the sealing performance between the piston and the lower shell, ensuring the pressure stability of lubricating oil discharge and intake, and thus maintaining the smoothness of lubrication circulation.

[0009] Preferably, the guide disc further enhances the coaxiality of piston sliding, reduces contact wear between the piston and the inner wall of the lower shell, and improves the structural rigidity of the piston to prevent deformation under high pressure and ensure the effectiveness of pressure transmission. The guide disc has a thickness of 5-8mm and its outer wall is provided with a wear-resistant coating to reduce the coefficient of sliding friction with the inner wall of the lower shell.

[0010] Preferably, the first check valve and the second check valve are designed in an alternating manner, and the first check valve, the second check valve and the oil passage are connected. The alternating design ensures that the lubricating oil discharge and return paths do not interfere with each other, avoiding oil backflow and flow loss. At the same time, it ensures that the lubricating oil discharged from the first check valve can quickly enter the oil passage, and the second check valve can efficiently recover the lubricated oil, improving circulation efficiency. In addition, the check valve structure can prevent oil backflow and ensure the directionality and stability of the circulation system.

[0011] Preferably, a spherical bearing is sleeved on the outside of the transmission housing, and the spherical bearing is connected to the inner cavity of the housing. A flange is externally connected to the transmission assembly. The spherical bearing provides flexible support for the rotation of the transmission housing, reduces the frictional resistance between the transmission housing and the housing, and can accommodate installation deviations of a certain angle, thereby improving the assembly tolerance of the reducer. The flange plays a role in fixing and positioning the transmission assembly, enhancing the installation stability of the transmission assembly, preventing displacement during high-speed transmission, and ensuring meshing accuracy.

[0012] Preferably, a controller is provided on the outside of the bottom shell, and the controller is connected to the cylinder and the transmission assembly. The controller can accurately control the start and stop of the cylinder, the movement speed and stroke of the piston, obtain the working load by collecting the torque or speed signal of the reducer output connection end, adaptively adjust the lubricating oil circulation flow rate and frequency according to the working load of the reducer, and at the same time coordinately control the working state of the transmission assembly, so that the transmission system and the lubrication system are linked and matched, optimize the overall operating efficiency, and reduce energy consumption.

[0013] Preferably, the transmission assembly can assist the steel wheel in power adjustment or speed compensation by adjusting the meshing of the steel wheels, thereby improving the stability and controllability of the transmission system; the anti-disengagement buckle can effectively prevent the transmission assembly and piston from axially disengaging under high-frequency vibration and high-pressure working environments, ensuring the reliability of component connections and the safety of equipment operation, and the clamping force of the anti-disengagement buckle can be adapted and adjusted according to the working load of the transmission assembly.

[0014] Preferably, the inner cavity of the oil inlet is provided with a dust plug, which is detachably connected to the oil inlet, and the material of the dust plug is compatible with the material of the lower shell. The dust plug can prevent external dust and impurities from entering the inner cavity of the lower shell when the oil inlet is not in use, thus avoiding contamination of the lubricating oil. The detachable design facilitates oil filling and oil changing operations, and the compatible material can prevent chemical reaction between the dust plug and the lower shell, ensuring the service life of the equipment.

[0015] Preferably, the flange surface is provided with positioning holes, which are connected to the inner cavity wall of the outer shell by positioning pins, and a sealing gasket is provided at the connection between the flange and the transmission assembly; the cooperation of the positioning holes and positioning pins enables the flange to be accurately positioned, further ensuring the installation accuracy of the transmission assembly, ensuring uniform meshing clearance between the steel wheel and the transmission assembly, and improving transmission stability; the sealing gasket can enhance the sealing performance at the connection between the flange and the transmission assembly, prevent lubricating oil leakage, reduce oil loss, and prevent impurities from entering the transmission parts.

[0016] Preferably, the hollow column is provided with a lubrication bushing in its inner cavity. The inner wall of the lubrication bushing fits against the outer wall of the sliding arm, and the lubrication bushing and the hollow column are in an interference fit. The lubrication bushing can reduce the sliding friction between the hollow column and the sliding arm, reduce the wear of the guide arm, extend its service life, and the interference fit ensures that the lubrication bushing is firmly installed, avoids loosening or displacement during long-term sliding, and ensures the guiding accuracy of the guide arm.

[0017] Compared with the prior art, the present invention provides a novel harmonic reducer with a lubrication method, which has the following beneficial effects: This novel lubrication method harmonic reducer utilizes an oil passage connecting the transmission housing and the transmission assembly to provide a pathway for lubricating oil circulation. Combined with the closed-loop circulation of lubricating oil formed by the reciprocating sliding of the piston driven by the cylinder, which alters the pressure within the lower housing cavity, this system comprehensively lubricates the meshing and rotating contact surfaces between the transmission assembly, steel wheels, and transmission housing. This effectively reduces component wear, decreases noise during operation, improves overall transmission efficiency, and reduces lubricating oil consumption. As the lubricating oil passes through the second and first check valves, an externally fitted mesh sleeve filters out metal debris and impurities generated by component wear, preventing scratches on the transmission contact surfaces and protecting transmission components from damage that could affect transmission accuracy. The rotation of the transmission housing causes the mesh sleeve to rub against the brush bristles, promptly removing impurities adhering to the mesh sleeve surface, preventing blockage, and ensuring smooth lubricating oil circulation. Attached Figure Description

[0018] Figure 1 This is a front view of the present invention; Figure 2 This is a front view of the present invention; Figure 3 This is a schematic diagram of the outer casing of the present invention; Figure 4 This is a schematic diagram of the interior of the outer casing of the present invention; Figure 5 This is a schematic diagram of the external shape of the brush bristles of the present invention.

[0019] In the diagram: 1. Bottom shell; 11. Input connection end; 2. Outer shell; 21. Transmission assembly; 22. Lower shell; 23. Flange; 24. Spherical bearing; 25. Steel wheel; 26. First check valve; 27. Oil inlet; 28. Second check valve; 29. ​​Base plate; 3. Output connection end; 4. Transmission housing; 5. Cylinder; 51. Piston; 52. Transmission assembly; 53. Guide arm; 54. Net sleeve; 55. Brush bristles; 56. Guide plate; 57. Anti-detachment buckle. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] This invention provides a technical solution; please refer to [link / reference]. Figure 1 and Figure 2 A novel lubrication-based harmonic reducer includes: a base shell 1 and an outer shell 2. The connecting end of the base shell 1 is connected to the outer shell 2. One end of the base shell 1 is provided with an input connection end 11. The output end of the outer shell 2 is rotatably connected to an output connection end 3. The inner cavity of the outer shell 2 is rotatably connected to a transmission shell 4. The output end of the transmission shell 4 is connected to the input end of the output connection end 3. The input end of the transmission shell 4 is provided with a transmission group 21. The transmission group 21 includes a wave generator and a flexible wheel. The output end of the flexible wheel meshes with the input end of the transmission shell 4. Oil passages are provided in the inner cavities of both the transmission shell 4 and the transmission group 21, and the two sets of oil passages are connected. The piston 51 has a guide plate 56 embedded in its inner cavity. The guide plate 56 is an annular metal disc. Its outer wall fits the inner wall of the lower shell 22, and its inner wall is press-fitted with the piston 51. The connection between the piston 51 and the transmission assembly 52 is provided with an anti-disengagement buckle 57. The anti-disengagement buckle 57 is a snap ring structure. It is embedded in the annular groove of the piston 51 and is adapted to the slot of the transmission assembly 52. ​​The output end of the transmission assembly 52 is provided with an adjusting steel wheel. The adjusting steel wheel meshes with the side of the steel wheel 25.

[0022] Please see Figure 3 and Figure 4 The transmission housing 4 is fitted with a lower housing 22, and the two sides of the lower housing 22 are respectively connected to a second one-way valve 28 and a first one-way valve 26. The inner cavity of the transmission housing 4 is provided with a steel wheel 25, and the steel wheel 25 meshes with the transmission assembly 21. The outer sides of the second one-way valve 28 and the first one-way valve 26 are both fitted with a mesh sleeve 54, and the inner cavity of the lower housing 22 is embedded with bristles 55, the position of the bristles 55 corresponding to the mesh sleeve 54. The bottom of the inner cavity of the lower shell 22 is connected to a base plate 29. The load-bearing end of the base plate 29 is connected to a cylinder 5. The output end of the cylinder 5 is connected to a piston 51. The piston 51 is slidably connected to the lower shell 22. A transmission assembly 52 is provided on the top of the piston 51. An oil inlet 27 is connected to the outside of the lower shell 22. The output end of the external transmission device is connected to the input connection end 11. The input connection end 11 is driven by the transmission group 21 and the steel wheel 25. The steel wheel 25 drives the transmission housing 4 to drive the output connection end 3. With the help of the meshing of the wave generator and the flexible wheel in the transmission group 21, the power transmission with a high reduction ratio is realized. At the same time, the oil passage connecting the transmission housing 4 and the transmission group 21 provides a path for the circulation of lubricating oil, ensuring the lubrication coverage of key transmission components during the power transmission process. Please see Figure 4 and Figure 5 Lubricating oil is injected into the inner cavities of the transmission housing 4 and the lower housing 22. When the cylinder 5 is working, the cylinder 5 is activated to drive the piston 51 to move up and down. The reciprocating sliding of the piston 51 changes the pressure inside the lower housing 22, causing the lubricating oil inside the lower housing 22 to be discharged through the first one-way valve 26. The lubricating oil flows through the oil passage inside the outer housing 2, providing comprehensive lubrication to the meshing surfaces and rotating contact surfaces between the transmission assembly 21, the steel wheel 25, and the transmission housing 4. The closed-loop circulation path of the lubricating oil is: from the lower housing 22 to the first one-way valve 26. The oil passage from valve 26 to housing 2, to transmission assembly 21, to transmission housing 4, to each transmission contact surface, to the return area of ​​lower housing 22, to the second check valve 28, and back to lower housing 22 reduces component wear and operating noise, and improves transmission efficiency. The lubricating oil after lubrication is squeezed into the return area of ​​the lower housing 22 corresponding to the input end of the second check valve 28 under the action of pressure difference. Then, the negative pressure generated by the rotation of steel wheel 25 is drawn into the interior of lower housing 22 through the second check valve 28, thereby forming a closed-loop cycle and reducing lubricating oil consumption. When the lubricating oil is discharged through the first check valve 26 or flows back into the lower housing 22 through the second check valve 28, it is filtered by the mesh sleeve 54 outside the corresponding check valve to remove metal shavings, impurities and other contaminants caused by component wear in the lubricating oil, thus preventing impurities from scratching the transmission contact surface. At the same time, when the transmission housing 4 rotates, it will cause the mesh sleeve 54 to rub against the brush bristles 55 to clean the surface of the mesh sleeve 54, remove the impurities attached to the surface of the mesh sleeve 54, prevent the mesh sleeve 54 from clogging, and ensure the smooth circulation of lubricating oil. The oil inlet 27 is used to add new lubricating oil or replace the circulating oil to ensure the continuous and stable operation of the lubrication system.

[0023] A guide arm 53 is connected between the piston 51 and the base plate 29. The guide arm 53 includes a hollow column and a sliding arm. The hollow column and the sliding arm are slidably connected. The hollow column and the sliding arm are respectively connected to the base plate 29 and the piston 51. The guide arm 53 provides precise guidance for the up and down movement of the piston 51 through the sliding cooperation of the hollow column and the sliding arm, avoiding the piston 51 from deviating or jamming during the sliding process, ensuring the sealing performance between the piston 51 and the lower shell 22, ensuring the pressure stability of lubricating oil discharge and intake, and thus maintaining the smoothness of lubrication circulation.

[0024] The guide plate 56 further enhances the coaxiality of the piston 51 sliding, reduces the contact wear between the piston 51 and the inner wall of the lower shell 22, and at the same time improves the structural rigidity of the piston 51, preventing it from deforming under high pressure and ensuring the effectiveness of pressure transmission.

[0025] The first check valve 26 and the second check valve 28 are designed in an alternating manner, and the first check valve 26 and the second check valve 28 are connected to the oil passage. The alternating design ensures that the lubricating oil discharge and return paths do not interfere with each other, avoiding oil backflow and flow loss. At the same time, it ensures that the lubricating oil discharged from the first check valve 26 can quickly enter the oil passage, and the second check valve 28 can efficiently recover the lubricated oil, improving circulation efficiency. In addition, the check valve structure can prevent oil backflow, ensuring the directionality and stability of the circulation system.

[0026] A spherical bearing 24 is sleeved on the outside of the transmission housing 4, and the spherical bearing 24 is connected to the inner cavity of the outer housing 2. A flange 23 is connected to the outside of the transmission assembly 21. The spherical bearing 24 provides flexible support for the rotation of the transmission housing 4, reduces the frictional resistance between the transmission housing 4 and the outer housing 2, and can adapt to a certain angle of installation deviation, thereby improving the assembly error tolerance of the reducer. The flange 23 plays a role in fixing and positioning the transmission assembly 21, enhancing the installation stability of the transmission assembly 21, preventing displacement during high-speed transmission, and ensuring meshing accuracy.

[0027] A controller is installed on the outside of the bottom shell 1. The controller is connected to the cylinder 5 and the transmission assembly 52. ​​The controller can precisely control the start and stop of the cylinder 5, the movement speed and stroke of the piston 51, and obtain the working load by collecting the torque or speed signal of the reducer output connection 3. The controller adaptively adjusts the lubricating oil circulation flow and frequency according to the working load of the reducer, and at the same time coordinates the control of the working state of the transmission assembly 52, so that the transmission system and the lubrication system are linked and matched, optimize the overall operating efficiency, and reduce energy consumption.

[0028] The transmission assembly 52 can assist the steel wheel 25 in power adjustment or speed compensation by adjusting the meshing of the steel wheel and the steel wheel 25, thereby improving the stability and controllability of the transmission system. The anti-detachment buckle 57 can effectively prevent the transmission assembly 52 and the piston 51 from axially falling off under high-frequency vibration and high-pressure working environment, ensuring the reliability of component connection and the safety of equipment operation.

[0029] The inner cavity of the oil inlet 27 is equipped with a dust plug. The dust plug is detachably connected to the oil inlet 27, and the material of the dust plug is compatible with the material of the lower shell 22. When the oil inlet 27 is not in use, the dust plug can prevent external dust and impurities from entering the inner cavity of the lower shell 22, thus avoiding contamination of the lubricating oil. The detachable design facilitates oil filling and oil changing operations, and the compatible material can prevent the dust plug from reacting chemically with the lower shell 22, ensuring the service life of the equipment.

[0030] The flange 23 has positioning holes on its surface, which are connected to the inner wall of the outer shell 2 by positioning pins. A sealing gasket is provided at the connection between the flange 23 and the transmission assembly 21. The cooperation between the positioning holes and the positioning pins enables the flange 23 to be accurately positioned, further ensuring the installation accuracy of the transmission assembly 21, ensuring that the meshing gap between the steel wheel 25 and the transmission assembly 21 is uniform, and improving the transmission stability. The sealing gasket can enhance the sealing of the connection between the flange 23 and the transmission assembly 21, prevent lubricating oil leakage, reduce oil loss, and prevent impurities from entering the transmission parts.

[0031] The hollow column has a lubrication bushing inside. The inner wall of the lubrication bushing fits against the outer wall of the sliding arm, and the lubrication bushing and the hollow column are interference fit. The lubrication bushing can reduce the sliding friction between the hollow column and the sliding arm, reduce the wear of the guide arm 53, extend its service life, and the interference fit ensures that the lubrication bushing is firmly installed, avoids loosening or displacement during long-term sliding, and ensures the guiding accuracy of the guide arm 53.

[0032] In this scheme, the output end of the external transmission device is connected to the input connection end 11. The input connection end 11 is driven by the transmission group 21 and the steel wheel 25. The steel wheel 25 drives the transmission housing 4 to drive the output connection end 3. Lubricating oil is injected into the inner cavity of the transmission housing 4 and the lower housing 22. When the cylinder 5 is working, the cylinder 5 is started to drive the piston 51 to move up and down, and the lubricating oil inside the lower housing 22 is discharged through the first one-way valve 26. The lubricating oil flows through the oil passage inside the outer housing 2, lubricating the meshing surface and rotating contact surface between the transmission assembly 21, the steel wheel 25 and the transmission housing 4. After that, it is squeezed into the return area of ​​the lower housing 22 corresponding to the input end of the second one-way valve 28. Then, the negative pressure generated by the rotation of the steel wheel 25 is drawn into the interior of the lower housing 22 through the second one-way valve 28, thereby realizing the closed-loop circulation of the lubricating oil. When the lubricating oil is discharged through the first check valve 26 or returned to the lower housing 22 through the second check valve 28, it will be filtered by the mesh sleeve 54 outside the corresponding check valve. At the same time, when the transmission housing 4 rotates, the mesh sleeve 54 rotates synchronously through the sleeve engagement with the transmission housing 4, so that the mesh sleeve 54 and the fixed bristles 55 generate friction cleaning, brushing away the impurities attached to the surface of the mesh sleeve 54.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel harmonic reducer with a new lubrication method, comprising: The bottom shell (1) and the outer shell (2) are connected at the connecting end of the bottom shell (1) and the outer shell (2). The bottom shell (1) is characterized by having an input connection end (11) at one end, an output connection end (3) rotatably connected to the output end of the outer shell (2), a transmission shell (4) rotatably connected to the inner cavity of the outer shell (2), the output end of the transmission shell (4) being connected to the input end of the output connection end (3), a transmission group (21) being provided at the input end of the transmission shell (4), the transmission group (21) including a wave generator and a flexible wheel, and the output end of the flexible wheel meshing with the input end of the transmission shell (4), and oil passages being provided in the inner cavities of both the transmission shell (4) and the transmission group (21), and the two sets of oil passages being connected. The transmission housing (4) is fitted with a lower housing (22), and the two sides of the lower housing (22) are respectively connected to a second one-way valve (28) and a first one-way valve (26). The inner cavity of the transmission housing (4) is provided with a steel wheel (25), and the steel wheel (25) meshes with the transmission assembly (21). The outer sides of the second one-way valve (28) and the first one-way valve (26) are both fitted with a mesh sleeve (54), and the inner cavity of the lower housing (22) is embedded with bristles (55). The position of the bristles (55) corresponds to the mesh sleeve (54). The bottom of the inner cavity of the lower shell (22) is connected to a base plate (29). The load-bearing end of the base plate (29) is connected to a cylinder (5). The output end of the cylinder (5) is connected to a piston (51). The piston (51) is slidably connected to the lower shell (22). The inner cavity of the piston (51) is fitted with a guide plate (56). The guide plate (56) is slidably engaged with the inner wall of the lower shell (22). The connection between the piston (51) and the transmission assembly (52) is provided with an anti-disengagement buckle (57). The anti-disengagement buckle (57) is a snap ring structure, which is embedded in the annular groove of the piston (51) and adapted to the slot of the transmission assembly (52). The top of the piston (51) is provided with the transmission assembly (52). The outside of the lower shell (22) is connected to an oil inlet (27).

2. The novel harmonic reducer with a lubrication method according to claim 1, characterized in that: A guide arm (53) is connected between the piston (51) and the base plate (29). The guide arm (53) includes a hollow column and a sliding arm. The hollow column and the sliding arm are slidably connected. The hollow column and the sliding arm are respectively connected to the base plate (29) and the piston (51).

3. A novel harmonic reducer with a lubrication method according to claim 1, characterized in that: The guide disc (56) is an annular metal disc, the outer wall of which is attached to the inner wall of the lower shell (22), and the inner wall is interference-fitted with the protruding end of the piston (51).

4. A novel harmonic reducer with a lubrication method according to claim 1, characterized in that: The first check valve (26) and the second check valve (28) are designed in an alternating manner, and the first check valve (26) and the second check valve (28) are connected to the oil passage.

5. A novel harmonic reducer with a lubrication method according to claim 1, characterized in that: The transmission housing (4) is fitted with a spherical bearing (24), which is connected to the inner cavity of the housing (2). The transmission assembly (21) is connected to a flange (23).

6. A novel harmonic reducer with a lubrication method according to claim 1, characterized in that: The bottom shell (1) is equipped with a controller on its exterior, which is connected to the cylinder (5) and the transmission assembly (52).

7. A novel harmonic reducer with a lubrication method according to claim 1, characterized in that: The output end of the transmission assembly (52) is provided with an adjusting steel wheel, which meshes with the side of the steel wheel (25), and the anti-disengagement buckle (57) restricts the axial displacement of the transmission assembly (52) relative to the piston (51).

8. A novel harmonic reducer with a lubrication method according to claim 1, characterized in that: The inner cavity of the oil inlet (27) is provided with a dust plug. The dust plug and the oil inlet (27) are detachably connected, and the material of the dust plug is compatible with the material of the lower shell (22).

9. A novel harmonic reducer with a lubrication method according to claim 5, characterized in that: The flange (23) has a positioning hole on its surface. The positioning hole is connected to the inner wall of the outer shell (2) by a positioning pin. A sealing gasket is provided at the connection between the flange (23) and the transmission assembly (21).

10. A novel harmonic reducer with a lubrication method according to claim 2, characterized in that: The hollow column has a lubrication bushing inside, the inner wall of which fits against the outer wall of the sliding arm, and the lubrication bushing and the hollow column are interference fit.

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