Planetary gear speed reduction structure of rigid-flexible coupling model

Abstract

The utility model relates to the field of planetary gears, discloses a planetary gear speed reduction structure of a rigid-flexible coupling model, and solves the problems that all nuts need to be dismounted in the dismounting process and all nuts need to be mounted in the mounting process due to the fact that a planetary carrier generally needs to be dismounted for maintenance, and the maintenance cost is low. In order to solve the problems that in the prior art, a pushing assembly and a limiting assembly are arranged, the pushing assembly is rotated to move towards the outer side, then the limiting assembly is limited at the same time, compared with the prior art, a plurality of nuts do not need to be disassembled during installation, and only less than half circle of rotation is needed, so that the nuts can be assembled and disassembled. And all the first push rods can be connected with the planet carrier, so that the purpose of simplifying the mounting and dismounting processes is achieved.

Description

Technical Field

[0001] The utility model relates to the field of planetary gears, in particular to a planetary gear speed reduction structure of a rigid-flexible coupling model. Background Art

[0002] The planetary gear reduction structure is a high-efficiency, high-precision reducer, usually composed of a sun gear, planetary gears, a planetary carrier, an internal ring gear and an output shaft. Its working principle is to achieve torque transmission and reduction output through the combined movement of the planetary gears and the planetary carrier.

[0003] The patent with publication number CN112855863A relates to a planetary gear reduction structure that is easy to disassemble and assemble, which solves the problem in the prior art that some of the current planetary gear reduction structures are complex and difficult to disassemble and assemble. The existing connection method between the planetary gear and the planetary carrier is mainly connected by threads, but there are multiple planetary gears inside the planetary gear reduction structure. When installing and repairing, the planetary carrier generally needs to be disassembled for repair, which results in the need to remove all the nuts during the disassembly process and install all the nuts during the installation. The process is very troublesome and time-consuming. Utility Model Content

[0004] The purpose of the utility model is to provide a planetary gear reduction structure of a rigid-flexible coupling model. The device is used to work, thereby solving the problem that the planetary carrier generally needs to be disassembled for maintenance, which results in all nuts needing to be removed during the disassembly process and all nuts needing to be installed during the installation, and the process is very troublesome and time-consuming.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a planetary gear reduction structure of a rigid-flexible coupling model, comprising a base, a shell fixedly connected to the outer side above the base, a planetary gear ring arranged on the inner side of the shell, a planetary gear arranged on the inner side of the planetary gear ring, a sun gear arranged on the inner side of the planetary gear, a first push rod arranged inside the planetary gear, an input shaft arranged inside the sun gear, a planetary carrier arranged on the upper end of the first push rod, an output shaft fixedly connected to the upper end of the planetary carrier, a pushing component arranged in the middle of the planetary carrier, and a limiting component arranged inside the outer side of the planetary carrier;

[0006] A first groove is provided in the middle interior of the planetary carrier, and the pushing assembly includes a rotating disk provided inside the first groove, a first hole is provided inside the rotating disk, a second push rod is provided inside the first hole, a rotating cylinder is fixedly connected to the upper end of the rotating disk, a first limiting rod is fixedly connected to the upper end of the second push rod, a second hole is connected on the inner wall of the first groove, and the first limiting rod is nested inside the second hole.

[0007] Preferably, the first groove and the rotating disk are matched in a clearance fit, and the rotating disk has a circular appearance when viewed from above.

[0008] Preferably, the first hole has an arc-shaped appearance when viewed from above, and the first hole and the second push rod are matched in a clearance fit, and the number of the first holes is consistent with the number of the planetary gears.

[0009] Preferably, the appearance structure of the first limiting rod is a cuboid, and the first limiting rod and the second hole are matched in a clearance fit.

[0010] Preferably, the rotating cylinder and the planetary carrier are connected by threaded connection.

[0011] Preferably, the limiting assembly includes a support plate arranged at the upper end of the first push rod, the upper end of the support plate is fixedly connected to the second limiting rod, the interior of the second limiting rod is provided with a limiting groove, the outer side of the second hole is connected to the third hole, and the second limiting rod is nested in the inner side of the third hole.

[0012] Preferably, the width of the support plate is greater than the width of the third hole, and the third hole and the second limiting rod are matched in a clearance fit, and the appearance structure of the second limiting rod is a rectangular parallelepiped.

[0013] Preferably, the width of the second hole is consistent with the width of the limiting groove.

[0014] The utility model proposes a planetary gear reduction structure of a rigid-flexible coupling model, which is provided with a pushing component and a limiting component. The pushing component is rotated to move outward, and the limiting component is limited at the same time. Compared with the prior art, it is not necessary to disassemble multiple nuts during installation. Only less than half a turn is required to connect all the first push rods to the planetary frame, thereby achieving the purpose of simplifying the installation and disassembly process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the planet carrier of the utility model;

[0017] Figure 3 This is a schematic diagram of the front cross-sectional structure of the planet carrier of the utility model;

[0018] Figure 4 For the utility model Figure 2 Schematic diagram of the structure at B in the middle;

[0019] Figure 5 For the utility model Figure 3 Schematic diagram of the structure at point A in the middle.

[0020] In the figure: 1. base; 2. housing; 3. planetary gear ring; 4. planetary gear; 5. sun gear; 6. first push rod; 7. input shaft; 8. planetary carrier; 9. output shaft; 10. pushing assembly; 11. limiting assembly; 12. first groove; 1001. rotating disk; 1002. first hole; 1003. second push rod; 1004. rotating cylinder; 1005. first limiting rod; 1006. second hole; 1101. support plate; 1102. second limiting rod; 1103. limiting groove; 1104. third hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 5 The utility model provides a technical solution: a planetary gear reduction structure of a rigid-flexible coupling model, comprising a base 1, a shell 2 fixedly connected to the outer side above the base 1, a planetary gear ring 3 arranged on the inner side of the shell 2, a planetary gear 4 arranged on the inner side of the planetary gear ring 3, a sun gear 5 arranged on the inner side of the planetary gear 4, a first push rod 6 arranged inside the planetary gear 4, an input shaft 7 arranged inside the sun gear 5, a planetary carrier 8 arranged on the upper end of the first push rod 6, an output shaft 9 fixedly connected to the upper end of the planetary carrier 8, a pushing component 10 arranged in the middle of the planetary carrier 8, and a limiting component 11 arranged on the outer side of the planetary carrier 8;

[0023] A first groove 12 is provided in the middle of the planetary carrier 8, and the pushing assembly 10 includes a rotating disk 1001 provided on the inner side of the first groove 12. The first groove 12 and the rotating disk 1001 are matched in a clearance fit, and the top view appearance structure shape of the rotating disk 1001 is circular, so that the rotating disk 1001 can rotate on the inner side of the first groove 12. A first hole 1002 is provided inside the rotating disk 1001, and a second push rod 1003 is provided on the inner side of the first hole 1002. A rotating cylinder 1004 is fixedly connected to the upper end of the rotating disk 1001, and the rotating cylinder 1004 is connected to the planetary carrier 8 in a threaded connection, so that the rotating cylinder 1004 can drive the rotating disk 1001 to rotate, and the rotating cylinder 1004 can be limited after rotating. The upper end of 1003 is fixedly connected with a first limiting rod 1005, the top view appearance structure shape of the first hole 1002 is an arc shape, and the first hole 1002 and the second push rod 1003 are matched in a clearance fit, and the number of the first holes 1002 is consistent with the number of the planetary gears 4, the appearance structure of the first limiting rod 1005 is a rectangular parallelepiped, and the first limiting rod 1005 and the second hole 1006 are matched in a clearance fit, so that when the rotating disk 1001 rotates, it can push the second push rod 1003 to move outward, thereby driving the first limiting rod 1005 to move outward along the trajectory of the second hole 1006, the second hole 1006 is connected to the inner wall of the first groove 12, and the first limiting rod 1005 is nested on the inner side of the second hole 1006.

[0024] The limiting assembly 11 includes a support plate 1101 arranged at the upper end of the first push rod 6, and the upper end of the support plate 1101 is fixedly connected to the second limiting rod 1102, and a limiting groove 1103 is arranged inside the second limiting rod 1102. The outer side of the second hole 1006 is connected to the third hole 1104, the width of the support plate 1101 is greater than the width of the third hole 1104, and the third hole 1104 and the second limiting rod 1102 are matched in a clearance fit, and the appearance structure of the second limiting rod 1102 is a rectangular parallelepiped, so that the support plate 1101 can support the planetary carrier 8, and the second limiting rod 1102 will not rotate after entering the limiting groove 1103, and the second limiting rod 1102 is nested in the inner side of the third hole 1104.

[0025] By rotating the second limiting rod 1102 so that the limiting groove 1103 is oriented inward, the third hole 1104 on the planetary carrier 8 is put on the outside of the second limiting rod 1102, and the rotating cylinder 1004 is rotated to drive the first hole 1002 to rotate, pushing the second push rod 1003 to move outward, driving the first limiting rod 1005 to move outward along the trajectory of the second hole 1006 and move to the inside of the limiting groove 1103, limiting the second limiting rod 1102, and limiting the first push rod 6, so that the first push rod 6 and the planetary carrier 8 are fixed together. Compared with the prior art, it is not necessary to remove multiple nuts during installation. Only less than half a turn is required to connect all the first push rods 6 to the planetary carrier 8, thereby achieving the purpose of simplifying the installation and disassembly process.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A planetary gear reduction structure of a rigid-flexible coupling model, comprising a base (1), a housing (2) fixedly connected to the upper outer side of the base (1), a planetary gear ring (3) arranged on the inner side of the housing (2), a planetary gear (4) arranged on the inner side of the planetary gear ring (3), a sun gear (5) arranged on the inner side of the planetary gear (4), a first push rod (6) arranged inside the planetary gear (4), an input shaft (7) arranged inside the sun gear (5), a planetary carrier (8) arranged on the upper end of the first push rod (6), and an output shaft (9) fixedly connected to the upper end of the planetary carrier (8), characterized in that: A pushing assembly (10) is arranged in the middle of the planet carrier (8), and a limiting assembly (11) is arranged in the outer side of the planet carrier (8); A first groove (12) is provided in the middle of the planet carrier (8); the pushing assembly (10) comprises a rotating disk (1001) provided inside the first groove (12); a first hole (1002) is provided inside the rotating disk (1001); a second push rod (1003) is provided inside the first hole (1002); a rotating cylinder (1004) is fixedly connected to the upper end of the rotating disk (1001); a first limiting rod (1005) is fixedly connected to the upper end of the second push rod (1003); a second hole (1006) is connected to the inner wall of the first groove (12), and the first limiting rod (1005) is nested inside the second hole (1006).

2. The planetary gear reduction structure of the rigid-flexible coupling model according to claim 1 is characterized in that: The first groove (12) and the rotating disk (1001) are matched in a clearance fit, and the rotating disk (1001) has a circular appearance when viewed from above.

3. The planetary gear reduction structure of the rigid-flexible coupling model according to claim 1 is characterized in that: The top view appearance structural shape of the first hole (1002) is an arc shape, and the first hole (1002) and the second push rod (1003) are matched in a clearance fit, and the number of the first holes (1002) is consistent with the number of the planetary gears (4).

4. The planetary gear reduction structure of the rigid-flexible coupling model according to claim 1 is characterized in that: The appearance structure of the first limiting rod (1005) is a rectangular parallelepiped, and the first limiting rod (1005) and the second hole (1006) are matched in a clearance fit.

5. The planetary gear reduction structure of the rigid-flexible coupling model according to claim 1 is characterized in that: The rotating cylinder (1004) and the planet carrier (8) are connected in a threaded manner.

6. The planetary gear reduction structure of the rigid-flexible coupling model according to claim 1 is characterized in that: The limiting assembly (11) comprises a support plate (1101) arranged at the upper end of the first push rod (6); the upper end of the support plate (1101) is fixedly connected to a second limiting rod (1102); a limiting groove (1103) is arranged inside the second limiting rod (1102); the outer side of the second hole (1006) is connected to a third hole (1104); and the second limiting rod (1102) is nested inside the third hole (1104).

7. The planetary gear reduction structure of the rigid-flexible coupling model according to claim 6 is characterized by: The width of the support plate (1101) is greater than the width of the third hole (1104), and the third hole (1104) and the second limiting rod (1102) are matched in a clearance fit, and the appearance structure of the second limiting rod (1102) is a rectangular parallelepiped.

8. The planetary gear reduction structure of the rigid-flexible coupling model according to claim 6 is characterized by: The width of the second hole (1006) is consistent with the width of the limiting groove (1103).

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