Double drive speed reducer

Abstract

The application provides a double-drive speed reducer, and belongs to the technical field of speed reducer equipment, which comprises a shell assembly, a first input shaft, a second input shaft, a first inner-outer tooth ring, a second inner-outer tooth ring and an output shaft located in the shell assembly. The first input shaft and the second input shaft are connected with motors, drive the first inner-outer tooth ring and the second inner-outer tooth ring through mechanical transmission, and finally output from the output shaft. The double-drive speed reducer can ensure that the equipment does not stop when any motor fails, effectively controls the production cost, and can adjust the output rotating speed according to the requirement. Meanwhile, the device has simple structure and convenient operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of speed reducer equipment, and in particular to a double-drive speed reducer. BACKGROUND

[0002] For a long time, if a motor fails during the operation of a conventional planetary speed reduction system, the motor needs to be replaced, which requires waiting for shutdown, resulting in an increase in the entire project cycle; or in the case where the motor cannot achieve speed regulation, but the output end requires dynamic speed, the conventional planetary speed reduction system cannot achieve this function. In order to improve the actual requirements, the present application provides a speed reducer with double-motor input; this design scheme effectively reduces the equipment failure rate, saves more time, and can effectively ensure the production progress. SUMMARY

[0003] Therefore, in order to solve the problem that the traditional speed reducer can still ensure work efficiency in the case of motor failure, the embodiments of the present application provide a double-drive speed reducer.

[0004] The double-drive speed reducer provided by the embodiments of the present application comprises a shell assembly and a first input shaft, a second input shaft, a first inner-outer tooth ring, a second inner-outer tooth ring and an output shaft located in the shell assembly.

[0005] The first input shaft is rotatably connected to the inner wall of the shell assembly, one end of the first input shaft is connected with a first motor, and the other end of the first input shaft is located in the shell assembly and connected with a first sun gear; one end of the output shaft is located in the shell assembly and internally provided with a rotatable first planetary gear, and the other end of the output shaft extends out of the shell assembly; the first planetary gear is externally meshingly and drivingly connected to the first sun gear; the output shaft is rotatably connected to the inner wall of the shell assembly; the first inner-outer tooth ring is rotatably sleeved on the outer wall of the output shaft, and the inner tooth shape of the first inner-outer tooth ring is internally meshingly and drivingly connected to the first planetary gear, and the outer tooth shape of the first inner-outer tooth ring is externally meshingly and drivingly connected to the outer tooth shape of the second inner-outer tooth ring; the second input shaft is located below the first input shaft; one end of the second input shaft is connected with a second motor, and the other end of the second input shaft is located in the shell assembly and peripherally sleeved with a planet carrier; the planet carrier is connected to the shell assembly, and the outer wall of the second input shaft is rotatably connected to the inner wall of the planet carrier; one end of the second input shaft provided with the planet carrier is provided with a second sun gear; the planet carrier is provided with a rotatable second planetary gear; the second planetary gear is externally meshingly and drivingly connected to the second sun gear; the second planetary gear is peripherally sleeved with the second inner-outer tooth ring; and the inner wall of the second inner-outer tooth ring is rotatably connected to the outer wall of the planet carrier, and the inner tooth shape of the second inner-outer tooth ring is internally meshingly and drivingly connected to the second planetary gear.

[0006] Further, the shell assembly comprises a middle shell and a third flange shell, wherein one end of the upper part of the middle shell is fixedly provided with a first flange shell, the other end is fixedly provided with a second flange shell, the third flange shell is located below the first flange shell, and the upper end of the third flange shell is fixedly connected with the lower end of the first flange shell, the lower part of the middle shell is located below the second flange shell, and the outer wall of the lower part of the middle shell is fixedly connected with the lower end of the second flange shell.

[0007] Further, the output shaft is fixedly provided with a first pin shaft, the first planetary gear is rotatably sleeved on the first pin shaft through a needle bearing, and the axes of the first input shaft, the first sun gear, the output shaft and the first pin shaft are parallel to each other.

[0008] Further, the planet carrier is fixedly provided with a second pin shaft, the second planetary gear is rotatably sleeved on the second pin shaft through a needle bearing, and the axes of the second input shaft, the second sun gear, the output shaft and the second pin shaft are parallel to each other.

[0009] Further, the shaft body of the first motor is fixedly connected with the corresponding end of the first input shaft through the first flange shell, and the outer wall of the first input shaft is rotatably connected with the inner wall of the first flange shell through a first single-row deep groove ball bearing.

[0010] Further, one end of the first inner-outer tooth ring is close to the first flange shell, and the end is fixedly provided with a cylinder, the other end is close to the second flange shell, the inner wall of the cylinder is rotatably connected with the outer wall of the first input shaft through a second single-row deep groove ball bearing, and the inner walls of the first inner-outer tooth ring are rotatably connected with the outer wall of the output shaft through a third single-row deep groove ball bearing and a fourth single-row deep groove ball bearing respectively.

[0011] Further, the outer wall of the end of the output shaft away from the first input shaft is rotatably connected with the inner wall of the second flange shell through a fifth single-row deep groove ball bearing.

[0012] Further, one end of the planet carrier is close to the third flange shell, and the end is fixedly connected with the inner wall of the third flange shell, the other end is close to the lower part of the middle shell, and the end is provided with a cover.

[0013] Further, the outer wall of the second input shaft is rotatably connected with the inner wall of the planet carrier through a sixth single-row deep groove ball bearing.

[0014] Further, the inner wall of the second inner-outer tooth ring is rotatably connected with the outer wall of the planet carrier through a seventh single-row deep groove ball bearing.

[0015] The embodiment of the present application provides the beneficial effects brought by the technical scheme: the double-drive speed reducer can ensure that the equipment does not stop when any motor fails, effectively controls the production cost, and can adjust the output rotating speed according to the requirement. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic diagram of a double-drive speed reducer.

[0017] In the figure: 1-first motor, 2-first input shaft, 3-first sun gear, 4-first planetary gear, 5-first pin shaft, 6-output shaft, 7-first inner and outer tooth ring, 8-cylinder, 9-second motor, 10-second input shaft, 11-second sun gear, 12-second planetary gear, 13-second pin shaft, 14-planetary carrier, 15-second inner and outer tooth ring, 16-closure, 17-middle shell, 18-first flange shell, 19-second flange shell, 20-third flange shell, 21-first single-row deep groove ball bearing, 22-second single-row deep groove ball bearing, 23-third single-row deep groove ball bearing, 24-fourth single-row deep groove ball bearing, 25-fifth single-row deep groove ball bearing, 26-sixth single-row deep groove ball bearing, 27-seventh single-row deep groove ball bearing. DETAILED DESCRIPTION

[0018] The technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the present application.

[0019] Please refer to Figure 1 The embodiment of the present application provides a double-drive speed reducer, which comprises a shell assembly and a first input shaft 2, a second input shaft 10, a first inner and outer tooth ring 7, a second inner and outer tooth ring 15 and an output shaft 6 located in the shell assembly.

[0020] The shell assembly comprises a first flange shell 18, a second flange shell 19, a middle shell 17, and a third flange shell 20, wherein the first flange shell 18 is located at one end of the upper half of the middle shell 17 and detachably fixedly connected with the middle shell 17, the second flange shell 19 is located at the other end of the upper half of the middle shell 17 and detachably fixedly connected with the middle shell 17, the third flange shell 20 is located below the first flange shell 18, and the lower end of the first flange shell 18 is detachably fixedly connected with the upper end of the third flange shell 20, the lower half of the middle shell 17 is located below the second flange shell 19, and the outer wall of the lower half of the middle shell 17 is detachably fixedly connected with the lower end of the second flange shell 19. It should be noted that in the embodiment, the middle shell 17 can be designed in one piece or in segments, as long as the requirements are met, and is not limited by the embodiment. It should be noted that in the actual work of the device in the embodiment, the shell assembly is fixedly connected with the fixed mounting position of the outside world, and the shell assembly mainly plays a role in protecting the internal equipment, and its structure only needs to meet the requirements, and is not limited by the embodiment.

[0021] The first input shaft 2 is located inside the shell assembly, and one end of the first input shaft 2 is drivingly connected with the first motor 1, and the first motor 1 is fixedly connected with the outer wall of the first flange shell 18. The other end of the first input shaft 2 is located inside the shell assembly, and the outer wall of the end is rotatably connected with the inner wall of the first flange shell 18 through the first single-row deep groove ball bearing 21. In this way, the rotation of the first input shaft 2 can be driven by the first motor 1.

[0022] The first input shaft 2 is located inside the shell assembly, and one end of the first input shaft 2 is drivingly connected with the first motor 1, and the first motor 1 is fixedly connected with the outer wall of the first flange shell 18. The other end of the first input shaft 2 is located inside the shell assembly, and the outer wall of the end is rotatably connected with the inner wall of the first flange shell 18 through the first single-row deep groove ball bearing 21. In this way, the rotation of the first input shaft 2 can be driven by the first motor 1.

[0023] The first inner and outer tooth ring 7 is sleeved on the outer periphery of one end of the output shaft 6 provided with the first planetary gear 4, the two ends of the inner wall of the first inner and outer tooth ring 7 are rotatably fixedly connected with the outer wall of the corresponding end of the output shaft 6 through the third single-row deep groove ball bearing 23 and the fourth single-row deep groove ball bearing 24 respectively, and the inner tooth shape of the first inner and outer tooth ring 7 is in driving connection with the first planetary gear 4, and the outer tooth shape is in driving connection with the outer tooth shape of the second inner and outer tooth ring 15; one end of the first inner and outer tooth ring 7 faces the first input shaft 2, and the other end faces the second flange shell 19, and the end of the one end of the first inner and outer tooth ring 7 facing the first input shaft 2 is fixedly provided with a cylinder body 8, the cylinder body 8 is sleeved on the outer periphery of the first input shaft 2, and the inner wall of the cylinder body 8 is rotatably sleeved on the outer wall of the first input shaft 2 through the second single-row deep groove ball bearing 22, so that the output shaft 6 can be driven to rotate when the first planetary gear 4 rotates.

[0024] It should be noted here that in the embodiment, the shafts of the first motor 1, the first input shaft 2, the first pin shaft 5 and the output shaft 6 are parallel to each other.

[0025] The second input shaft 10 is located below the first input shaft 2, the second input shaft 10 is located inside the shell assembly, and one end of the second input shaft 10 is drivingly connected with the second motor 9, and the second motor 9 is fixedly connected with the outer wall of the third flange shell 20, the other end of the second input shaft 10 is located in the third flange shell 20, the planet carrier 14 is fixedly arranged on the side of the third flange shell 20 away from the second motor 9, the planet carrier 14 is sleeved on the outer periphery of the one end of the second input shaft 10 in the third flange shell 20, and the outer wall of the second input shaft 10 is rotatably fixedly connected with the inner wall of the planet carrier 14 through the sixth single-row deep groove ball bearing 26, so that the second input shaft 10 can be driven by the second motor 9.

[0026] The second sun gear 11 is fixedly arranged on the end of the second input shaft 10 in the third flange shell 20, and the planet carrier 14 is rotatably provided with the second planetary gear 12 away from the third flange shell 20, and the second planetary gear 12 is in driving connection with the second sun gear 11.

[0027] The second pin shaft 13 is fixedly arranged on the one end of the planet carrier 14 provided with the second planetary gear 12, and the second planetary gear 12 is rotatably sleeved on the second pin shaft 13 through the needle bearing, so that the second planetary gear 12 can be driven to rotate when the second sun gear 11 rotates.

[0028] The second inner-outer gear ring 15 is sleeved on the periphery of the planet carrier 14, both ends of the inner wall of the second inner-outer gear ring 15 are rotatably fixedly connected with the outer wall of the planet carrier 14 through the seventh single-row deep groove ball bearing 27, the inner tooth shape of the second inner-outer gear ring 15 is in driving connection with the second planetary gear 12, and the outer tooth shape is in driving connection with the outer tooth shape of the first inner-outer gear ring 7, so that when the second planetary gear 12 rotates, the second inner-outer gear ring 15 can be driven to rotate, thereby driving the first inner-outer gear ring 7 to rotate, and then output from the output shaft 6.

[0029] Further, the planet carrier 14 is provided with a cover 16 at one end close to the second planetary gear 12, and it should be noted that the cover 16 is generally used in cooperation with the bearing in actual working conditions, which is a common technical means, and the purpose is to prevent the corresponding bearing from loosening to a certain extent.

[0030] It should be further noted that in the embodiment, the axes of the shaft body of the second motor 9, the second input shaft 10, the second pin shaft 13 and the output shaft 6 are parallel to each other.

[0031] The working mode of the double-drive speed reducer in the embodiment is as follows: the first motor 1 drives the first planetary gear 4 to rotate through the first sun gear 3, and then drives the output shaft 6 to rotate and output in cooperation with the first inner-outer gear ring 7 and the second inner-outer gear ring 15; the second motor 9 drives the second planetary gear 12 to rotate through the second sun gear 11, and then drives the output shaft 6 to rotate and output in cooperation with the second inner-outer gear ring 15 and the first inner-outer gear ring 7; and the first motor 1 and the second motor 9 can work at the same time.

[0032] In this document, the front, rear, upper, lower and other orientation words are defined according to the positions of the parts in the drawings and the positions of the parts relative to each other, only for the purpose of expressing the technical scheme clearly and conveniently. It should be understood that the use of the orientation words should not limit the scope of the application.

[0033] In the case of no conflict, the above-mentioned embodiments and features in the embodiments can be combined with each other.

[0034] The above-mentioned is only the preferred embodiment of the application, and does not limit the application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application should be included in the protection scope of the application.

Claims

1. A dual drive speed reducer characterized by: The shell assembly comprises a first input shaft (2), a second input shaft (10), a first inner and outer gear ring (7), a second inner and outer gear ring (15), and an output shaft (6) located in the shell assembly. The outer wall of the first input shaft (2) is rotatably connected to the inner wall of the shell assembly, one end of the first input shaft (2) is connected with a first motor (1), the other end is located in the shell assembly and is connected with a first sun gear (3), one end of the output shaft (6) is located in the shell assembly and has a rotatable first planetary gear (4) inside, the other end extends out of the shell assembly, the first planetary gear (4) is in external meshing transmission connection with the first sun gear (3), the outer wall of the output shaft (6) is rotatably connected to the inner wall of the shell assembly, the first inner and outer gear ring (7) is rotatably sleeved on the outer wall of the output shaft (6), the inner tooth shape of the first inner and outer gear ring (7) is in internal meshing transmission connection with the first planetary gear (4), and the outer tooth shape is in external meshing transmission connection with the outer tooth shape of the second inner and outer gear ring (15), the second input shaft (10) is located below the first input shaft (2), one end of the second input shaft (10) is connected with a second motor (9), the other end is located in the shell assembly and is peripherally sleeved with a planet carrier (14), the planet carrier (14) is connected with the shell assembly, and the outer wall of the second input shaft (10) is rotatably connected to the inner wall of the planet carrier (14), the second input shaft (10) is provided with a second sun gear (11) at the end close to the planet carrier (14), the planet carrier (14) is provided with a rotatable second planetary gear (12), the second planetary gear (12) is in external meshing transmission connection with the second sun gear (11), and the second planetary gear (12) is peripherally sleeved with the second inner and outer gear ring (15), and the inner wall of the second inner and outer gear ring (15) is rotatably connected to the outer wall of the planet carrier (14), and the inner tooth shape is in internal meshing transmission connection with the second planetary gear (12).

2. A dual drive speed reducer as claimed in claim 1, characterized in that: The shell assembly comprises a middle shell (17) and a third flange shell (20), wherein one end of the upper part of the middle shell (17) is fixedly provided with a first flange shell (18), the other end is fixedly provided with a second flange shell (19), the third flange shell (20) is located below the first flange shell (18), and the upper end of the third flange shell (20) is fixedly connected with the lower end of the first flange shell (18), the lower part of the middle shell (17) is located below the second flange shell (19), and the outer wall of the lower part of the middle shell (17) is fixedly connected with the lower end of the second flange shell (19).

3. A dual drive speed reducer as claimed in claim 1, characterized in that: A first pin shaft (5) is fixedly provided on the output shaft (6), the first planetary gear (4) is rotatably sleeved on the first pin shaft (5) through a needle bearing, and the axes of the first input shaft (2), the first sun gear (3), the output shaft (6), and the first pin shaft (5) are parallel to each other.

4. A dual drive speed reducer as claimed in claim 1, wherein: The second pin shaft (13) is fixed on the planetary carrier (14), and the second planetary gear (12) is rotatably sleeved on the second pin shaft (13) through a needle bearing, and the axes of the second input shaft (10), the second sun gear (11), the output shaft (6) and the second pin shaft (13) are parallel to each other.

5. A dual drive speed reducer as claimed in claim 2, wherein: The shaft body of the first motor (1) is fixedly connected with the corresponding end of the first input shaft (2) through the first flange shell (18), and the outer wall of the first input shaft (2) is rotatably connected with the inner wall of the first flange shell (18) through a first single-row deep groove ball bearing (21).

6. A dual drive speed reducer as claimed in claim 2, wherein: One end of the first inner and outer tooth ring (7) is close to the first flange shell (18), and the end is fixedly provided with a cylinder (8), and the other end is close to the second flange shell (19), the inner wall of the cylinder (8) is rotatably connected with the outer wall of the first input shaft (2) through a second single-row deep groove ball bearing (22), and the inner walls of the first inner and outer tooth ring (7) are rotatably connected with the outer wall of the output shaft (6) through a third single-row deep groove ball bearing (23) and a fourth single-row deep groove ball bearing (24) respectively.

7. A dual drive speed reducer as claimed in claim 2, wherein: The outer wall of the end of the output shaft (6) away from the first input shaft (2) is rotatably connected with the inner wall of the second flange shell (19) through a fifth single-row deep groove ball bearing (25).

8. A dual drive speed reducer as claimed in claim 2, wherein: One end of the planetary carrier (14) is close to the third flange shell (20), and the end is fixedly connected with the inner wall of the third flange shell (20), and the other end is close to the lower part of the middle shell (17), and the end is provided with a cover (16).

9. A dual drive speed reducer as claimed in claim 2, wherein: The outer wall of the second input shaft (10) is rotatably connected with the inner wall of the planetary carrier (14) through a sixth single-row deep groove ball bearing (26).

10. A dual drive speed reducer as claimed in claim 2, wherein: The inner wall of the second inner and outer tooth ring (15) is rotatably connected with the outer wall of the planetary carrier (14) through a seventh single-row deep groove ball bearing (27).

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