Planetary gear motor

Abstract

The utility model discloses a planetary gear motor which comprises a planetary arm support arranged in a speed reducer shell, a circular inner gear ring is arranged in the speed reducer shell, planetary gears are arranged in the planetary arm support, and a sun gear is arranged among the three planetary gears. The first mounting seat is arranged on one side of the speed reducer shell, a motor is arranged on one side of the first mounting seat, and an input shaft is arranged between the motor and the sun gear; the output shaft is arranged on one side of the planetary arm support, a key groove is formed in the outer wall of one end of the output shaft, the cavity is formed in the shell of the planetary gear motor, the cavity is filled with dry air, a vacuum environment is formed, the sound insulation effect of the shell is improved, and when a sound source in a speed reducer vibrates and makes noise, the noise is reduced, and the noise is reduced. The noise is transmitted to the speed reducer shell and is gradually attenuated through the cavity, so that the noise of the speed reducer is reduced, and the use effect of the planetary gear motor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of reduction motors, in particular to a planetary reduction motor. Background Art

[0002] Reducers generally convert input low torque and high speed into high torque and low speed output through a gear set. Planetary gear reducers have two characteristics. The first is that the input shaft and output shaft are coaxial; the second is that it has more than 3 planetary gears, which provide a larger combined torque during speed change and a smoother speed transmission. Planetary reduction motors generally refer to planetary gear reduction motors. Planetary reduction motors generally convert input low torque and high speed into high torque and low speed output through a gear set.

[0003] The Chinese patent announcement number is CN219322216U, and the authorization announcement date is July 7, 2023. The planetary reduction motor includes a servo motor, a reducer housing and a mounting seat. The reducer housing is provided on one side of the servo motor, and the bottom end of the reducer housing is provided with a mounting seat. The outer side of the reducer housing is provided with a noise reduction structure, and the interior of the reducer housing is provided with an annular inner gear ring. A sun gear is provided at the middle position inside the annular inner gear ring, and a planetary gear is provided on the outer side of the sun gear. A connecting shaft is provided at one end of the annular inner gear ring. The utility model is provided with an auxiliary structure. In order to reduce the friction between the annular inner gear ring and the reducer housing, the lubricating oil can be continuously and slowly injected into the connection between the annular inner gear ring and the reducer housing through the use of an oil storage tank, an oil outlet hole and a connecting channel, thereby reducing the friction between the reducer housing and the annular inner gear ring, making the service life of the annular inner gear ring longer, thereby improving the lubrication effect.

[0004] The existing planetary reduction motor housing is made of solid steel. The vibration generated by the internal vibration source of the planetary reduction motor is transmitted to the reduction motor housing. The housing has poor noise attenuation ability, which will cause a large amount of noise to be transmitted out of the planetary reduction motor, affecting the surrounding area, reducing the use effect of the planetary reduction motor, and failing to meet the use requirements. Utility Model Content

[0005] The purpose of the utility model is to provide a planetary reduction motor to solve the problem proposed in the above background technology that the shell of the existing planetary reduction motor is made of solid steel, the vibration generated by the internal vibration source of the planetary reduction motor is transmitted to the reduction motor shell, and the shell has poor noise attenuation ability, which will cause a large amount of noise to be transmitted out of the planetary reduction motor, affecting the surroundings, reducing the use effect of the planetary reduction motor, and failing to meet the use requirements.

[0006] To achieve the above object, the utility model provides the following technical solution: a planetary reduction motor, including a reduction gear housing, and also including:

[0007] A planetary arm, which is arranged inside the reducer housing, and the planetary arm is rotatably connected to the reducer housing, a circular internal gear ring is arranged inside the reducer housing, and the circular internal gear ring is arranged as a whole with the reducer housing, the circular internal gear ring is arranged outside the planetary arm, and a planetary gear is arranged inside the planetary arm, and three planetary gears are arranged equidistantly inside the planetary arm, the planetary gears are rotatably connected to the planetary arm, and the planetary gears are meshed with the circular internal gear ring, and a sun gear is arranged between the three planetary gears, and the sun gear is meshed with the planetary gears;

[0008] A first mounting seat, which is arranged on one side of the reducer housing, and the reducer housing is fixedly connected to the first mounting seat, a motor is arranged on one side of the first mounting seat, and the motor is connected to the first mounting seat by screws, an input shaft is arranged between the motor and the sun gear, and two ends of the input shaft are respectively connected to the output end of the motor and the sun gear;

[0009] The output shaft is arranged on one side of the planetary arm frame, and the output shaft and the planetary arm frame are arranged as one body, and a key groove is arranged on the outer wall of one end of the output shaft.

[0010] Preferably, a cavity is provided inside the reducer housing, two cavities are provided, and the two cavities are symmetrically arranged about the center of the reducer housing.

[0011] Preferably, heat dissipation bars are provided on the outside of both sides of the reducer housing, at least six heat dissipation bars are provided, and the heat dissipation bars are equidistantly arranged on both sides of the reducer housing, and the heat dissipation bars and the reducer housing are integrated.

[0012] Preferably, an oil storage box is provided at the upper end of the reducer housing, and the oil storage box is fixedly connected to the reducer housing, a refueling hole is provided at the upper end of the reducer housing, and the refueling hole is connected to the reducer housing and the oil storage box, a sponge is provided inside the refueling hole, and the sponge is connected to the reducer housing as a whole, a piston is provided at the upper end of the oil storage box, and the piston is clamped with the oil storage box, an observation window is provided on one side of the oil storage box, and the observation window and the oil storage box are integrated.

[0013] Preferably, an end cover is provided on one side of the reducer housing, a connecting bolt is provided between the end cover and the reducer housing, and the end cover and the reducer housing are connected through the connecting bolt, a sealing ring is provided between the end cover and the reducer housing, the output shaft and the end cover are through-set, an oil seal bearing is provided at the contact point between the output shaft and the end cover, and the oil seal bearing is provided outside the output shaft.

[0014] Preferably, a second mounting seat is provided below the reducer housing, and the second mounting seat is fixedly connected to the reducer housing, mounting bolts are provided above both ends of the second mounting seat, and the mounting bolts are movably connected to the second mounting seat, a compression spring gasket is provided outside the mounting bolt, and the compression spring gasket is movably connected to the mounting bolt, and the two ends of the compression spring gasket are respectively fitted with the second mounting seat and the mounting bolt.

[0015] Preferably, a support bracket is disposed on the first mounting seat, and the support bracket is fixedly connected to the first mounting seat, and the support bracket is disposed below the motor, and the support bracket fits the lower end of the motor.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The utility model device is provided with a cavity and a heat dissipation strip. The cavity makes the reducer housing a double-layer structure. The cavity is filled with dry air to form a vacuum environment, which improves the sound insulation effect of the housing. When the sound source in the reducer generates vibration and noise, the noise is transmitted to the reducer housing, and then gradually attenuated by the cavity, thereby reducing the noise of the reducer. The heat dissipation strip can accelerate the heat dissipation of the reducer housing, ensure the working temperature environment in the reducer, and increase the service life of the reducer.

[0018] 2. The utility model device is provided with an oil storage box, a refueling hole and a sponge. The refueling hole and the sponge add the lubricating oil stored in the oil storage box to the inside of the reducer housing, lubricates the circular internal gear ring, the sun gear and the planetary gears, reduces friction resistance and runs more smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a side view of the utility model;

[0021] Figure 3 This is a cross-sectional view of the reducer housing of the utility model;

[0022] Figure 4 For the utility model Figure 3 A partial enlarged view of area A.

[0023] In the figure: 1. reducer housing; 2. first mounting seat; 3. motor; 4. support bracket; 5. second mounting seat; 6. mounting bolt; 7. compression spring gasket; 8. oil storage box; 9. piston; 10. observation window; 11. heat dissipation strip; 12. end cover; 13. sealing ring; 14. connecting bolt; 15. oil seal bearing; 16. output shaft; 17. keyway; 18. cavity; 19. circular internal gear ring; 20. sun gear; 21. planetary gear; 22. input shaft; 23. oil filling hole; 24. sponge; 25. planetary arm bracket. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] See also Figure 1-4 The utility model provides an embodiment: a planetary reduction motor, including a reduction gear housing 1, and also including:

[0026] A planetary arm 25 is arranged inside the reducer housing 1, and the planetary arm 25 is rotatably connected to the reducer housing 1. A circular inner gear ring 19 is arranged inside the reducer housing 1, and the circular inner gear ring 19 is arranged as a whole with the reducer housing 1. The circular inner gear ring 19 is arranged outside the planetary arm 25. A planetary gear 21 is arranged inside the planetary arm 25. Three planetary gears 21 are arranged, and the three planetary gears 21 are equidistantly arranged inside the planetary arm 25. The planetary gears 21 are rotatably connected to the planetary arm 25, and the planetary gears 21 are meshed with the circular inner gear ring 19. A sun gear 20 is arranged between the three planetary gears 21, and the sun gear 20 is meshed with the planetary gears 21.

[0027] A first mounting seat 2 is arranged on one side of the reducer housing 1, and the reducer housing 1 is fixedly connected to the first mounting seat 2. A motor 3 is arranged on one side of the first mounting seat 2, and the motor 3 is connected to the first mounting seat 2 by screws. An input shaft 22 is arranged between the motor 3 and the sun gear 20, and both ends of the input shaft 22 are respectively connected to the output end of the motor 3 and the sun gear 20;

[0028] The output shaft 16 is arranged at one side of the planetary arm 25 , and the output shaft 16 and the planetary arm 25 are arranged as one body. A keyway 17 is arranged on the outer wall of one end of the output shaft 16 .

[0029] See also Figure 3A cavity 18 is provided inside the reducer housing 1. There are two cavities 18, and the two cavities 18 are symmetrically arranged about the center of the reducer housing 1. Dry air is filled in the cavity 18 to form a vacuum environment, thereby improving the sound insulation effect of the housing. When the sound source in the reducer vibrates and emits noise, the noise is transmitted to the reducer housing, and then gradually attenuated through the cavities, thereby reducing the reducer noise.

[0030] See also Figure 1 and Figure 3 , heat dissipation strips 11 are arranged on the outside of both sides of the reducer housing 1, at least six heat dissipation strips 11 are arranged, and the heat dissipation strips 11 are arranged equidistantly on both sides of the reducer housing 1, and the heat dissipation strips 11 are arranged as a whole with the reducer housing 1. The heat dissipation strips 11 can accelerate the heat dissipation of the reducer housing 1 to ensure the internal operating temperature environment of the reducer.

[0031] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 An oil storage box 8 is provided at the upper end of the reducer housing 1, and the oil storage box 8 is fixedly connected to the reducer housing 1. A refueling hole 23 is provided at the upper end of the reducer housing 1, and the refueling hole 23 is connected to the reducer housing 1 and the oil storage box 8. A sponge 24 is provided inside the refueling hole 23, and the sponge 24 is connected to the reducer housing 1 as a whole. A piston 9 is provided at the upper end of the oil storage box 8, and the piston 9 is clamped with the oil storage box 8. An observation window 10 is provided on one side of the oil storage box 8, and the observation window 10 is integrated with the oil storage box 8. The lubricant stored in the oil storage box 8 is added to the interior of the reducer housing 1 through the refueling hole 23 and the sponge 24 to lubricate the circular internal gear ring 19, the sun gear 20 and the planetary gears 21 to reduce the friction resistance.

[0032] See also Figure 1 and Figure 2 An end cover 12 is provided on one side of the reducer housing 1, a connecting bolt 14 is provided between the end cover 12 and the reducer housing 1, and the end cover 12 and the reducer housing 1 are connected through the connecting bolt 14, a sealing ring 13 is provided between the end cover 12 and the reducer housing 1, an output shaft 16 and the end cover 12 are through-set, an oil seal bearing 15 is provided at the contact point between the output shaft 16 and the end cover 12, and the oil seal bearing 15 is arranged outside the output shaft 16.

[0033] See also Figure 1 and Figure 3A first mounting seat 5 is provided below the reducer housing 1, and the first mounting seat 5 is fixedly connected to the reducer housing 1, mounting bolts 6 are provided above both ends of the first mounting seat 5, and the mounting bolts 6 are movably connected to the first mounting seat 5, a compression spring gasket 7 is provided outside the mounting bolt 6, and the compression spring gasket 7 is movably connected to the mounting bolt 6, the two ends of the compression spring gasket 7 are respectively fitted with the first mounting seat 5 and the mounting bolt 6, the reducer is installed and fixed by the first mounting seat 5 and the mounting bolt 6, and the compression spring gasket 7 makes the installed reducer have a buffering effect.

[0034] See also Figure 1 The first mounting seat 2 is provided with a support bracket 4, and the support bracket 4 is fixedly connected to the first mounting seat 2. The support bracket 4 is arranged below the motor 3, and the support bracket 4 fits the lower end of the motor 3. The motor 3 is supported by the support bracket 4 to improve the installation stability of the motor 3.

[0035] Working principle: the motor 3 drives the sun gear 20 to rotate through the input shaft 22, and the sun gear 20 is meshed with the planetary gear 21. As the sun gear 20 rotates, it drives the planetary arm 25 to transmit, and then drives the output shaft 16 to rotate; the cavity 18 is filled with dry air to form a vacuum environment, thereby improving the sound insulation effect of the shell. When the sound source in the reducer vibrates and emits noise, the noise is transmitted to the reducer shell, and then gradually decays through the cavity, thereby reducing the noise of the reducer. The heat dissipation strip 11 can accelerate the heat dissipation of the reducer shell 1 and ensure the internal operating temperature environment of the reducer; the refueling hole 23 and the sponge 24 add the lubricant stored in the oil storage box 8 to the interior of the reducer shell 1, lubricate the circular inner gear ring 19, the sun gear 20 and the planetary gear 21, and reduce friction resistance.

[0036] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0037] 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 reduction motor, comprising a reduction gear housing (1), characterized in that: Also includes: A planetary arm (25), which is arranged inside the reducer housing (1), and the planetary arm (25) is rotatably connected to the reducer housing (1), a circular internal gear ring (19) is arranged inside the reducer housing (1), and the circular internal gear ring (19) and the reducer housing (1) are arranged as a whole, the circular internal gear ring (19) is arranged outside the planetary arm (25), a planetary gear (21) is arranged inside the planetary arm (25), three planetary gears (21) are arranged, and the three planetary gears (21) are equidistantly arranged inside the planetary arm (25), the planetary gears (21) are rotatably connected to the planetary arm (25), and the planetary gears (21) are meshingly connected to the circular internal gear ring (19), a sun gear (20) is arranged between the three planetary gears (21), and the sun gear (20) is meshingly connected to the planetary gears (21); A first mounting seat (2) is arranged on one side of the reducer housing (1), and the reducer housing (1) is fixedly connected to the first mounting seat (2); a motor (3) is arranged on one side of the first mounting seat (2), and the motor (3) is connected to the first mounting seat (2) via screws; an input shaft (22) is arranged between the motor (3) and the sun gear (20), and two ends of the input shaft (22) are respectively connected to the output end of the motor (3) and the sun gear (20); An output shaft (16) is arranged on one side of the planetary arm bracket (25), and the output shaft (16) and the planetary arm bracket (25) are arranged as a whole, and a keyway (17) is arranged on the outer wall of one end of the output shaft (16).

2. A planetary reduction motor according to claim 1, characterized in that: A cavity (18) is arranged inside the reducer housing (1), two cavities (18) are arranged, and the two cavities (18) are symmetrically arranged about the center of the reducer housing (1).

3. A planetary reduction motor according to claim 1, characterized in that: Heat dissipation bars (11) are arranged outside both sides of the reducer housing (1), at least six heat dissipation bars (11) are arranged, and the heat dissipation bars (11) are arranged at equal distances on both sides of the reducer housing (1), and the heat dissipation bars (11) and the reducer housing (1) are arranged as a whole.

4. A planetary reduction motor according to claim 1, characterized in that: An oil storage box (8) is provided at the upper end of the reducer housing (1), and the oil storage box (8) is fixedly connected to the reducer housing (1); a refueling hole (23) is provided at the upper end of the reducer housing (1), and the refueling hole (23) is connected to the reducer housing (1) and the oil storage box (8); a sponge (24) is provided inside the refueling hole (23), and the sponge (24) is connected to the reducer housing (1) as a whole; a piston (9) is provided at the upper end of the oil storage box (8), and the piston (9) is clamped with the oil storage box (8); an observation window (10) is provided on one side of the oil storage box (8), and the observation window (10) and the oil storage box (8) are arranged as a whole.

5. A planetary reduction motor according to claim 1, characterized in that: An end cover (12) is provided on one side of the reducer housing (1), a connecting bolt (14) is provided between the end cover (12) and the reducer housing (1), and the end cover (12) and the reducer housing (1) are connected via the connecting bolt (14), a sealing ring (13) is provided between the end cover (12) and the reducer housing (1), the output shaft (16) and the end cover (12) are interlinked, an oil seal bearing (15) is provided at the contact point between the output shaft (16) and the end cover (12), and the oil seal bearing (15) is provided outside the output shaft (16).

6. A planetary reduction motor according to claim 1, characterized in that: A second mounting seat (5) is arranged below the reducer housing (1), and the second mounting seat (5) is fixedly connected to the reducer housing (1); mounting bolts (6) are arranged above both ends of the second mounting seat (5), and the mounting bolts (6) are movably connected to the second mounting seat (5); a compression spring gasket (7) is arranged outside the mounting bolt (6), and the compression spring gasket (7) is movably connected to the mounting bolt (6); and the two ends of the compression spring gasket (7) are respectively in contact with the second mounting seat (5) and the mounting bolt (6).

7. A planetary reduction motor according to claim 1, characterized in that: The first mounting seat (2) is provided with a support bracket (4), and the support bracket (4) is fixedly connected to the first mounting seat (2); the support bracket (4) is arranged below the motor (3), and the support bracket (4) fits the lower end of the motor (3).

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