A reduction gear for a drive mechanism

Abstract

This utility model provides a speed reducer for a drive mechanism, belonging to the technical field of speed reducers. It solves the problem of insufficient space compactness in existing speed reducers. The input pulley of this utility model has a stepped structure with internal through-holes. One end of the input pulley is a flange, and the other end is an external toothed wheel. The portion of the input pulley between the flange and the external toothed wheel serves as a support. A hydraulic motor is connected to the end of the input pulley. The input shaft is internally connected to the input pulley at one end of the external toothed wheel. One side of the flange is connected to one end of the output housing. The internally splined double gear is integrally stepped annular, with one end having an internal tooth end and the other end having an external tooth end. The external toothed wheel is externally connected to the internal tooth end of the internally splined double gear, and an internal gear ring is externally meshed with the external tooth end of the internally splined double gear. This utility model has the advantages of compact structure and high transmission efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of speed reducer technology and relates to a speed reducer for a drive mechanism. Background Technology

[0002] Compared to traditional reducers, the reducer of the drive mechanism has the advantages of small size, high transmission efficiency and strong load-bearing capacity. It can achieve a large reduction ratio in a limited space and is widely used in drive scenarios such as robot joints and precision machine tools. It is a key component to improve the stability and accuracy of the mechanism's power output.

[0003] Chinese patent publication number CN210196366U discloses a planetary reducer, including a sun gear, at least two planet gears meshing with the sun gear, a planet carrier connected to each planet gear, an internal gear ring meshing with each planet gear, and a gear ring fixing seat sleeved on the outer circumference of the internal gear ring; the sun gear also has an input shaft at its center, and the planet carrier has an output shaft coaxial with the input shaft at its center; an elastic element is also provided between the internal gear ring and the gear ring fixing seat.

[0004] In a planetary reducer provided by this patent, an elastic element is provided between the internal gear ring and the gear ring fixing seat. Multiple elastic elements are arranged at intervals along the circumference of the internal gear ring. This may increase the radial dimension of the reducer, resulting in its inadequacy in terms of space compactness. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the prior art by providing a speed reducer for a drive mechanism.

[0006] The objective of this utility model can be achieved through the following technical solution: A reducer for a drive mechanism includes a hydraulic motor, an input pulley, an input shaft, an output housing, an internal spline double gear, an external gear, a planetary gear assembly, and an end cover. The input pulley has a stepped structure and an internal through-hole structure. One end of the input pulley is a flange, and the other end is an external toothed wheel. The portion of the input pulley between the flange and the external toothed wheel serves as a support. The hydraulic motor is connected to the end of the input pulley, and a drive shaft extends from the hydraulic motor and extends into the input pulley. Internally, the input shaft is connected to the input pulley at one end of the external toothed gear. One side of the flange is connected to one end of the output housing. The internal spline double gear is generally in the form of a stepped ring. One end of the internal spline double gear is an internal tooth end and the other end is an external tooth end. The external toothed gear is connected to the internal tooth end of the internal spline double gear. An internal gear ring is meshed with the external tooth end of the internal spline double gear. The planetary gear assembly is meshed with the internal gear ring. The internal gear ring is located inside the output housing. The end cover is sealed to one end of the output housing.

[0007] In the reducer of the aforementioned drive mechanism, a bushing is sleeved around the external toothed wheel, a first ball bearing is sleeved around the support portion, and a second ball bearing is sleeved around the internal tooth end.

[0008] In the reducer of the aforementioned drive mechanism, a mounting flange body is formed on one side of the flange, and the end of the hydraulic motor is connected to the mounting flange body.

[0009] In the reducer of the aforementioned drive mechanism, the external gear is sleeved outside the output housing, and a connecting flange is formed outside the output housing. The external gear is fixedly connected to one side of the connecting flange.

[0010] In the reducer of the aforementioned drive mechanism, the input shaft extends into the interior of the internal spline double gear and planetary gear assembly and is connected to the planetary gear assembly. A third ball bearing is sleeved and connected on the input shaft.

[0011] In the reducer of the aforementioned drive mechanism, one end of the external gear is fixedly connected to an end flange.

[0012] In the reducer of the aforementioned drive mechanism, a planetary shaft is integrally formed on the inner side of the end cover, and the planetary shaft is connected to a planetary gear set.

[0013] Compared with the prior art, the reducer of the drive mechanism provided by this utility model has the following beneficial effects: 1. The input pulley has a stepped structure, integrating the flange, external toothed wheel and support part together, and forming a through hole structure inside, reducing the overall axial dimension. The reasonable layout of components such as the internal spline double gear and planetary gear assembly enables the reducer to achieve multi-stage reduction function in a limited space. Compared with the traditional reducer structure, it is more compact and suitable for occasions with high space requirements; 2. The meshing transmission of the internal spline double gear with the external toothed wheel and internal gear ring, as well as the transmission of the planetary gear assembly, all adopt gear meshing, effectively improving the transmission efficiency of the entire reducer. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the exploded structure of this utility model.

[0015] In the diagram: 1. Hydraulic motor; 11. Drive shaft; 2. Input pulley; 21. Through-hole structure; 22. Flange; 23. External gear; 24. Support; 25. Bushing; 26. First ball bearing; 27. Mounting flange body; 3. Input shaft; 31. Third ball bearing; 4. Output housing; 41. Connecting flange; 5. Internal spline double gear; 51. Internal gear end; 52. External gear end; 53. Second ball bearing; 6. External gear; 7. Planetary gear assembly; 8. End cover; 81. Planetary shaft; 9. Internal gear ring; 10. End flange. Detailed Implementation

[0016] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0017] like Figures 1 to 2 As shown, this embodiment includes a hydraulic motor 1, an input pulley 2, an input shaft 3, an output housing 4, an internal spline double gear 5, an external gear 6, a planetary gear assembly 7, and an end cover 8. The input pulley 2 has a stepped structure and an internal through-hole structure 21. One end of the input pulley 2 is a flange 22 and the other end is an external toothed wheel 23. The part of the input pulley 2 between the flange 22 and the external toothed wheel 23 is a support part 24. The overall structure is compact and facilitates the orderly assembly of each component.

[0018] like Figures 1 to 2 As shown, the hydraulic motor 1 is connected to the end of the input pulley 2. The drive shaft 11 of the hydraulic motor 1 extends into the through hole structure 21 of the input pulley 2 to provide power input for this embodiment. The input shaft 3 is connected to the inside of the input pulley 2 at one end of the external toothed wheel 23 to realize the transmission and connection of power. One side of the flange 22 is connected to one end of the output housing 4 to form the main support structure of this embodiment.

[0019] like Figures 1 to 2 As shown, the internal spline double gear 5 is a stepped ring shape and includes an internal tooth end 51 and an external tooth end 52. The internal tooth end 51 is a small diameter end and the external tooth end 52 is a large diameter end. The external toothed wheel 23 extends into the internal tooth end 51 of the internal spline double gear 5 and meshes with the internal tooth end 51 to realize power transmission and deceleration. An internal gear ring 9 is meshed with the external tooth end 52 of the internal spline double gear 5. Part of the internal gear ring 9 meshes with the external tooth end 52 and the other part meshes with the planetary gear assembly 7. The internal gear ring 9 is located inside the output housing 4, forming a multi-stage reduction structure to ensure transmission efficiency and output torque. The end cover 8 is sealed to one end of the output housing 4 to effectively protect the internal components.

[0020] To elaborate further, such as Figures 1 to 2As shown, the external toothed wheel 23 is externally sleeved with a bushing 25, which plays a role in stabilizing support and reducing wear. The support part 24 is externally sleeved with a first ball bearing 26, and the internal tooth end 51 is externally sleeved with a second ball bearing 53, which improves the service life of the equipment.

[0021] To elaborate further, such as Figures 1 to 2 As shown, a mounting flange body 27 is formed on one side of the flange 22. The end of the hydraulic motor 1 is connected to the mounting flange body 27 to ensure the stable installation of the hydraulic motor 1 and the stable output of power. The external gear 6 is sleeved on the outside of the output housing 4. A connecting flange 41 is formed on the outside of the output housing 4. The external gear 6 is fixedly connected to one side of the connecting flange 41 to facilitate docking with external equipment.

[0022] To elaborate further, such as Figures 1 to 2 As shown, the input shaft 3 extends into the interior of the internal spline double gear 5 and the planetary gear assembly 7 and is connected to the planetary gear assembly 7. A third ball bearing 31 is sleeved on the shaft of the input shaft 3 to further improve the stability of the rotation of the input shaft 3. One end of the external gear 23 is fixedly connected to the end flange 10.

[0023] To elaborate further, such as Figures 1 to 2 As shown, a planetary shaft 81 is integrally formed on the inner side of the end cover 8. The planetary shaft 81 is connected to the planetary gear assembly 7, providing a stable support for the planetary gear assembly 7 and ensuring its operating accuracy.

[0024] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0025] Although this document uses a variety of terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A reducer for a drive mechanism, comprising a hydraulic motor (1), an input pulley (2), an input shaft (3), an output housing (4), an internal spline double gear (5), an external gear (6), a planetary gear assembly (7), and an end cover (8), characterized in that: The input pulley (2) has a stepped structure and an internal through-hole structure (21). One end of the input pulley (2) is a flange (22) and the other end is an external gear (23). The part of the input pulley (2) between the flange (22) and the external gear (23) is a support part (24). The hydraulic motor (1) is connected to the end of the input pulley (2). The hydraulic motor (1) has a drive shaft (11) extending out and the drive shaft (11) extends into the inside of the input pulley (2). The input shaft (3) is connected to the inside of the input pulley (2) at one end of the external gear (23). The flange (22) is... The side is connected to one end of the output housing (4). The internal spline double gear (5) is generally in the shape of a stepped ring. One end of the internal spline double gear (5) is an internal tooth end (51) and the other end is an external tooth end (52). The external toothed wheel (23) is connected to the internal tooth end (51) of the internal spline double gear (5). The external tooth end (52) of the internal spline double gear (5) is meshed with an internal gear ring (9). The planetary gear assembly (7) is meshed with the internal gear ring (9). The internal gear ring (9) is located inside the output housing (4). The end cover (8) is sealed to one end of the output housing (4).

2. The reducer of the drive mechanism according to claim 1, characterized in that: The external toothed wheel (23) is fitted with a bushing (25), the support part (24) is fitted with a first ball bearing (26), and the internal tooth end (51) is fitted with a second ball bearing (53).

3. The reducer of the drive mechanism according to claim 1, characterized in that: A mounting flange body (27) is formed on one side of the flange (22), and the end of the hydraulic motor (1) is connected to the mounting flange body (27).

4. The reducer of the drive mechanism according to claim 1, characterized in that: The external gear (6) is sleeved on the outside of the output housing (4), and a connecting flange (41) is formed on the outside of the output housing (4). The external gear (6) is fixedly connected to one side of the connecting flange (41).

5. The reducer of the drive mechanism according to claim 1, characterized in that: The input shaft (3) extends into the interior of the internal spline double gear (5) and the planetary gear assembly (7) and is connected to the planetary gear assembly (7). A third ball bearing (31) is sleeved on the input shaft (3).

6. The reducer of the drive mechanism according to claim 1, characterized in that: One end of the external toothed wheel (23) is fixedly connected to an end flange (10).

7. The reducer of the drive mechanism according to claim 1, characterized in that: The end cap (8) has a planetary shaft (81) integrally formed on its inner side, and the planetary shaft (81) is connected to the planetary gear set.

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