Novel industrial robot joint precision planetary reducer

Abstract

The utility model relates to the technical field of planetary reducers, and discloses a novel industrial robot joint precision planetary reducer which comprises a base, and the top of the base is fixedly connected with a reducer shell I. According to the novel industrial robot joint precision planetary reducer, one end of a clamping block is clamped with a bearing sleeve, and one side of a limiting piece is clamped with a positioning piece; the clamping block and the limiting piece can be used for limiting installation of the limiting pipe and the positioning piece, so that the contact area with the input shaft is increased, the supporting effect on the input shaft is improved, the axis deviation of the input shaft is reduced, the axis stability of the input shaft is guaranteed, the influence on clearance fit of the main shaft and the bearing is reduced, and the service life of the main shaft is prolonged. The overall precision of the input shaft and the speed reducer is further ensured; lubricating oil can be driven to flow in the backflow pipe through downward movement of the floating plate, the guide pipe and the valve can guide flowing of the lubricating oil above the floating plate, and therefore replacement of the lubricating oil is assisted, and waste lubricating oil at the bottom can be conveniently and rapidly discharged.

Description

Technical Field

[0001] The utility model application relates to the technical field of planetary reducers, in particular to a novel precision planetary reducer for industrial robot joints. Background Art

[0002] A planetary reducer is a power transmission mechanism that uses a gear speed converter to reduce the motor's rotation speed to the desired number of rotations and obtain a larger torque. The gear with fewer teeth on the planetary reducer's transmission shaft meshes with the large gear on the output shaft to achieve the purpose of speed reduction.

[0003] There is friction during the operation of precision planetary reducers, which causes changes in the size, shape and surface engineering quality of related components. The axis deviation of the main shaft will affect the clearance fit between the main shaft and the bearing, thereby increasing the friction between the two and reducing the precision of the reducer during use. Utility Model Content

[0004] In order to solve the problem that the axial center deviation of the shaft will affect the clearance fit between the main shaft and the bearing, thereby increasing the friction between the two and reducing the precision of the reducer when in use, the utility model provides a new industrial robot joint precision planetary reducer to solve the above problem.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A novel industrial robot joint precision planetary reducer comprises a base, a reducer housing 1 is fixedly connected to the top of the base, a reducer housing 2 is clamped on the top of the reducer housing 1, a front end cover is installed on one side of the reducer housing 2 by bolts, an auxiliary mechanism is arranged on one side of the front end cover, the auxiliary mechanism comprises a bearing sleeve, a clamping block and a sealing ring, one side of the bearing sleeve is connected to the front end cover, an input shaft is inserted through the inside of the bearing sleeve, the inner ring surface of the bearing sleeve is fixedly connected to the sealing ring, the inner ring surface of the sealing ring is overlapped with a limiting tube, the outer ring surface of the limiting tube is fixedly connected with a clamping block, one end of the clamping block is clamped and connected to the bearing sleeve, a positioning piece is sleeved inside the limiting tube, and the positioning piece is penetrated by the input shaft.

[0007] Furthermore, a positioning hole is opened on one side of the input shaft, a limiting member is inserted into the positioning hole, and one end of the limiting member is connected to an extension block through a torsion spring.

[0008] Furthermore, the limiting member is rotatably connected to the extension block, and one side of the extension block is fixedly connected to the limiting tube.

[0009] Furthermore, a planetary gear set is installed inside the first reducer housing, one side of the planetary gear set is connected to an output shaft, a rear end cover is inserted through the outside of the output shaft, and one side of the rear end cover is connected to the second reducer housing by bolts.

[0010] Furthermore, a recovery box is engaged with the top of the base, one side of the recovery box is overlapped with the reducer housing, a guide pipe is arranged above the reducer housing, a refueling port is fixedly connected to the top of the guide pipe, and the bottom of the guide pipe passes through the two side walls of the reducer housing.

[0011] Furthermore, a noise reduction plate is fixedly connected to the bottom of an inner cavity of the reducer housing, a return pipe is arranged above the noise reduction plate, and one end of the return pipe passes through a side wall of the reducer housing and is fixedly connected to the recovery box.

[0012] Furthermore, a floating plate is inserted through the outside of the reflux pipe, the floating plate is slidably connected to an inner wall of the reducer housing, and a guide tube is embedded on the floating plate, an oil inlet hole is opened on one side of the guide tube above the floating plate, and a valve is installed on one side of the guide tube below the floating plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, one end of the engaging block is engaged with the bearing sleeve, and one side of the limiting member is engaged with the positioning member. The engaging block and the limiting member can be used to limit the installation of the limiting tube and the positioning member, respectively, thereby increasing the contact area with the input shaft, improving the support effect on the input shaft, reducing the axial deviation of the input shaft, ensuring the axial stability of the input shaft, thereby reducing the influence on the clearance fit between the main shaft and the bearing, and further ensuring the overall accuracy of the input shaft and the reducer.

[0015] 2. In the utility model, the bottom of the oil filling port is connected to two guide pipes, through which lubricating oil can be added to the reducer, thereby reducing the noise caused by wear between gears. The downward movement of the floating plate can drive the flow of lubricating oil in the return pipe. The guide pipe and the valve can guide the flow of lubricating oil above the floating plate, thereby assisting the replacement of the lubricating oil and facilitating the rapid discharge of the waste lubricating oil at the bottom. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1is a schematic diagram of the three-dimensional structure of a planetary reducer according to an embodiment of the present application;

[0018] Figure 2 yes Figure 1 A three-dimensional schematic diagram of the second structure of the reducer housing in the illustrated embodiment;

[0019] Figure 3 yes Figure 1 A three-dimensional schematic diagram of the fuel filler structure in the illustrated embodiment;

[0020] Figure 4 yes Figure 1 Schematic diagram of the installation of the guide tube structure in the illustrated embodiment.

[0021] The meanings of the reference numerals in the figure are as follows: 1. guide tube; 2. front end cover; 3. bearing sleeve; 4. input shaft; 5. snap-fit ​​block; 6. base; 7. recovery box; 8. reducer housing 1; 9. rear end cover; 10. limiter; 11. positioning member; 12. sealing ring; 13. output shaft; 14. oil filling port; 15. planetary gear set; 16. floating plate; 17. noise reduction plate; 18. guide tube; 19. valve; 20. return pipe; 21. limiter; 22. reducer housing 2. DETAILED DESCRIPTION

[0022] In order to make the purpose, features, and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the embodiments described below are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] Reference Figure 1-Figure 4 A novel industrial robot joint precision planetary reducer comprises a base 6, a reducer housing 8 is fixedly connected to the top of the base 6, a reducer housing 22 is engaged with the top of the reducer housing 8, a front end cover 2 is installed on one side of the reducer housing 22 by bolts, an auxiliary mechanism is arranged on one side of the front end cover 2, the auxiliary mechanism comprises a bearing sleeve 3, a clamping block 5 and a sealing ring 12, one side of the bearing sleeve 3 is connected to the front end cover 2, an input shaft 4 is inserted through the inside of the bearing sleeve 3, the inner ring surface of the bearing sleeve 3 is fixedly connected to the sealing ring 12, the inner ring surface of the sealing ring 12 is overlapped with a limiting tube 21, the outer ring surface of the limiting tube 21 is fixedly connected with a clamping block 5, one end of the clamping block 5 is engaged with the bearing sleeve 3, a positioning piece 11 is sleeved inside the limiting tube 21, and the positioning piece 11 is penetrated by the input shaft 4.

[0024] A positioning hole is provided on one side of the input shaft 4, and a limiting member 10 is inserted into the positioning hole. One end of the limiting member 10 is connected to an extension block through a torsion spring. The limiting member 10 is rotatably connected to the extension block, and one side of the extension block is fixedly connected to a limiting tube 21. A planetary gear set 15 is installed inside the reducer housing 8, and one side of the planetary gear set 15 is connected to the output shaft 13. A rear end cover 9 is inserted through the outside of the output shaft 13, and one side of the rear end cover 9 is connected to the reducer housing 22 by bolts.

[0025] Specifically, the reducer housing 22 can be used to support and reinforce the top of the reducer housing 8, and can also be used to wrap and protect the top of the planetary gear set 15, thereby improving the sealing of the reducer when in use; the sealing ring 12 can be used to guide the installation of the limit tube 21; when the installation of the limit tube 21 is fixed by the locking block 5, the friction between the sealing ring 12 and the limit tube 21 can improve the stability of the installation of the limit tube 21; the limit tube 21 can be used to assist the installation of the positioning member 11, thereby reducing the distance between the limit tube 21 and the outer ring surface of the input shaft 4; the extension block can be used to support the rotation of the limit member 10; the limit member 10 can be used to reinforce the installation of the positioning member 11, thereby reducing the looseness of the positioning member 11 during use, thereby maintaining the stability of the axis of the input shaft 4, thereby ensuring the rotation accuracy of the input shaft 4, and avoiding the interference of the eccentricity of the input shaft 4 on the accuracy of the reducer.

[0026] As an optimization solution, Figure 1-Figure 4 As shown, a recovery box 7 is engaged with the top of the base 6, and one side of the recovery box 7 is overlapped with the reducer housing 8. A guide pipe 1 is arranged above the reducer housing 8. The top of the guide pipe 1 is fixedly connected with a refueling port 14, and the bottom of the guide pipe 1 passes through the side wall of the reducer housing 22, and a noise reduction plate 17 is fixedly connected to the bottom of the inner cavity of the reducer housing 8. A return pipe 20 is arranged above the noise reduction plate 17, and one end of the return pipe 20 passes through the side wall of the reducer housing 8 and is fixedly connected with the recovery box 7. A floating plate 16 is inserted through the outside of the return pipe 20, and the floating plate 16 is slidably connected to the inner wall of the reducer housing 8, and a guide pipe 18 is embedded on the floating plate 16, and an oil inlet hole is opened on the side of the guide pipe 18 located above the floating plate 16, and a valve 19 is installed on the side of the guide pipe 18 located below the floating plate 16.

[0027] Specifically, the guide pipe 1 can be used to guide the lubricating oil entering the reducer housing 8, thereby assisting the lubricating oil to fully contact the planetary gear set 15, thereby improving the uniform distribution of the lubricating oil at the bottom of the inner cavity of the reducer housing 8, and the noise reduction plate 17 can reduce the noise of the entire reducer during use. The return pipe 20 is U-shaped and can guide the flow of the lubricating oil, so that the lubricating oil located below the floating plate 16 enters the recovery box 7 for storage, thereby realizing the rapid discharge of the lubricating oil at the bottom of the reducer housing 8. The valve 19 can be used to control the opening and closing of the bottom of the guide pipe 18, thereby assisting the lubricating oil above the floating plate 16 to move downward and drive the floating plate 16 to move up and reset. The oil inlet hole is opened on one side of the guide pipe 18, which can assist the lubricating oil to enter the guide pipe 18, thereby discharging it to the bottom of the floating plate 16.

[0028] Working principle: First, use the engaging block 5 to engage with the bearing sleeve 3, and insert one end of the limit tube 21 into the sealing ring 12, then rotate the limit piece 10 on the extension block on one side of the limit tube 21, insert the positioning piece 11 into the limit tube 21, and then release the limit piece 10. One side of the limit piece 10 engages with the side wall of the positioning piece 11 to limit the positioning piece 11. At this time, the input shaft 4 can be calibrated and supported to keep the axis of the input shaft 4 stable. The input shaft 4 is used as the input and is decelerated after being processed by the planetary gear set 15. The output shaft 13 is driven to rotate to complete the overall deceleration process. The lubricating oil can be sent into the two connected guide pipes 1 through the refueling port 14, and discharged into the reducer housing 8 through the bottom of the guide pipe 1. The lubricating oil falls It falls on the top of the floating plate 16 and drives the floating plate 16 to move downward under the action of gravity. There is a gap between the bottom of the return pipe 20 and the noise reduction plate 17. Therefore, when the floating plate 16 moves downward, the liquid surface below the floating plate 16 is pressurized to make the excess lubricating oil enter the recovery box 7 through the return pipe 20. When the liquid level is low, the bottom of the valve 19 overlaps with the noise reduction plate 17, and then the valve 19 is opened. The lubricating oil above the floating plate 16 enters the guide tube 18 through the oil inlet hole on one side of the guide tube 18, and then is discharged through the noise reduction plate 17, increasing the amount of oil at the bottom of the floating plate 16 and the buoyancy of the floating plate 16, thereby driving the floating plate 16 to move upward, assisting the reduction gear housing 8 in replacing the lubricating oil. The noise reduction plate 17 contains glass wool fiber, which has sound absorption and noise reduction effects.

[0029] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0030] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A new type of industrial robot joint precision planetary reducer, characterized by: The invention comprises a base (6), the top of which is fixedly connected to a reducer housing 1 (8), the top of which is engaged with a reducer housing 2 (22), a front end cover (2) being mounted on one side of the reducer housing 2 (22) by means of bolts, an auxiliary mechanism being arranged on one side of the front end cover (2), the auxiliary mechanism comprising a bearing sleeve (3), an engaging block (5) and a sealing ring (12), one side of the bearing sleeve (3) being connected to the front end cover (2), an input shaft (4) being inserted through the inside of the bearing sleeve (3), an inner ring surface of the bearing sleeve (3) being fixedly connected to the sealing ring (12), an inner ring surface of the sealing ring (12) being overlapped with a limit tube (21), an outer ring surface of the limit tube (21) being fixedly connected to a engaging block (5), one end of the engaging block (5) being engaged with the bearing sleeve (3), a positioning member (11) being sleeved inside the limiting tube (21), and the positioning member (11) being penetrated by the input shaft (4).

2. According to claim 1, a novel industrial robot joint precision planetary reducer is characterized by: A positioning hole is provided on one side of the input shaft (4), a limiting member (10) is inserted into the positioning hole, and one end of the limiting member (10) is connected to an extension block via a torsion spring.

3. According to claim 2, a novel industrial robot joint precision planetary reducer is characterized by: The limiting member (10) is rotatably connected to the extension block, and one side of the extension block is fixedly connected to the limiting tube (21).

4. The novel industrial robot joint precision planetary reducer according to claim 1 is characterized by: A planetary gear set (15) is installed inside the first reducer housing (8), one side of the planetary gear set (15) is connected to an output shaft (13), a rear end cover (9) is inserted through the outside of the output shaft (13), and one side of the rear end cover (9) is connected to the second reducer housing (22) by bolts.

5. The novel industrial robot joint precision planetary reducer according to claim 1 is characterized by: A recovery box (7) is engaged with the top of the base (6), one side of the recovery box (7) is overlapped with the reducer housing 1 (8), a guide tube (1) is arranged above the reducer housing 1 (8), a refueling port (14) is fixedly connected to the top of the guide tube (1), and the bottom of the guide tube (1) passes through the side wall of the reducer housing 2 (22).

6. The novel industrial robot joint precision planetary reducer according to claim 1 is characterized by: A noise reduction plate (17) is fixedly connected to the bottom of the inner cavity of the reducer housing (8), and a return pipe (20) is arranged above the noise reduction plate (17). One end of the return pipe (20) passes through the side wall of the reducer housing (8) and is fixedly connected to the recovery box (7).

7. The novel industrial robot joint precision planetary reducer according to claim 6 is characterized by: A floating plate (16) is inserted through the outside of the return pipe (20), the floating plate (16) is slidably connected to the inner wall of the reducer housing (8), and a guide tube (18) is embedded on the floating plate (16), an oil inlet hole is provided on a side of the guide tube (18) located above the floating plate (16), and a valve (19) is installed on a side of the guide tube (18) located below the floating plate (16).

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