Helical gear double-transmission speed reducer with double-sided mounting structure

Abstract

A bevel gear double-transmission speed reducer of a double-face installation structure comprises a shell, a driving device, a first transmission set, a second transmission set, a first output set and a second output set. The first transmission set, the second transmission set, the first output set and the second output set are rotationally installed in the shell, one end of the second transmission set is meshed with the first transmission set, the other end of the second transmission set is meshed with one end of the first output set, and the other end of the first output set is meshed with the second output set. And the first output group and the second output group are respectively used for outputting different powers. According to the content, the bevel gear double-transmission speed reducer with the double-face installation structure is provided, and the problems that in the prior art, in order to output two different kinds of power, two driving devices are usually independently arranged to serve as two driving forces, the structure is complex, the transmission ratio is small, and the cost is high are solved. The problems of low transmission precision, unstable transmission, short service life and large noise and vibration are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of reducers, in particular to a helical gear double-transmission reducer with a double-sided installation structure. Background Art

[0002] As an important transmission device, reducers are widely used in various industrial fields to reduce speed and increase torque to meet the working requirements of different mechanical equipment. With the continuous development and progress of industrial technology, reducers have achieved significant improvements in performance, accuracy and reliability, providing strong support for industrial production.

[0003] In order to output two different powers, the reducer in the prior art usually needs to separately set up two drive devices as two driving forces, which has a complex structure, a small transmission ratio, low transmission accuracy, unstable transmission, short service life, and high noise and vibration. Utility Model Content

[0004] The purpose of the utility model is to propose a helical gear dual-drive reducer with a double-sided mounting structure, which solves the problems of the reducer in the prior art that, in order to output two different powers, two drive devices usually need to be separately set as two driving forces, the structure is complex, the transmission ratio is small, the transmission accuracy is low, the transmission is unstable, the service life is short, and the noise and vibration are large.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A helical gear double-drive reducer with a double-sided mounting structure, comprising a housing, a driving device, a first transmission group, a second transmission group, a first output group, and a second output group;

[0007] The first transmission group, the second transmission group, the first output group and the second output group are rotatably mounted inside the housing, one end of the second transmission group is meshed with the first transmission group, the other end of the second transmission group is meshed with one end of the first output group, the other end of the first output group is meshed with the second output group, and the first output group and the second output group are respectively used to output different powers;

[0008] The output end of the driving device is provided with a first bevel gear, and the driving device is used to drive the first transmission group to rotate through the first bevel gear.

[0009] Further, the first transmission group includes a first rotating shaft, a first gear, a second helical gear and a first rolling bearing;

[0010] The first rolling bearing is installed on the housing, the first rotating shaft is rotatably installed on the first rolling bearing, the first gear and the second bevel gear are respectively installed on the first rotating shaft, the first gear is meshed with the first bevel gear, and the second bevel gear is meshed with the second transmission group.

[0011] Specifically, the second transmission group includes a second rotating shaft, a second gear, a third helical gear and a second rolling bearing;

[0012] The second rolling bearing is mounted on the housing, the second shaft is rotatably mounted on the second rolling bearing, the second gear and the third bevel gear are respectively mounted on the second shaft, the second gear is meshed with the second bevel gear, and the third bevel gear is meshed with the first output group.

[0013] Preferably, the first transmission group further includes a first elastic retaining ring, and the second transmission group further includes a second elastic retaining ring;

[0014] The housing is provided with a first mounting hole and a second mounting hole, the first mounting hole is located above the second mounting hole, a first rolling bearing is installed in the first mounting hole, the first mounting hole is provided with a first mounting groove, the first elastic retaining ring is installed in the first mounting groove, and the first elastic retaining ring abuts against the end surface of the first rolling bearing;

[0015] The second mounting hole is provided with a second rolling bearing, the second mounting hole is provided with a second mounting groove, the second elastic retaining ring is mounted in the second mounting groove, and the second elastic retaining ring abuts against the end surface of the second rolling bearing.

[0016] In some embodiments, the first output group includes a third rotating shaft, a third gear and a third rolling bearing;

[0017] The third rolling bearing is mounted on the housing, the third rotating shaft is rotatably mounted on the third rolling bearing, the third gear is mounted on the third rotating shaft, one end of the third gear is meshed with the third bevel gear, and the other end of the third gear is meshed with the second output group.

[0018] Further, the first output group also includes a third elastic retaining ring, a first spacer sleeve and a first oil seal;

[0019] The housing is provided with a third mounting hole, the third rolling bearing is installed in the third mounting hole, the third mounting hole is provided with a third mounting groove, the third elastic retaining ring is installed in the third mounting groove;

[0020] The first spacer and the first oil seal are respectively installed on the third rotating shaft, one end of the first spacer abuts against the third rolling bearing, the other end of the first spacer abuts against the third elastic retaining ring, and the first oil seal is located on the outside of the third elastic retaining ring.

[0021] Specifically, the second output group includes a fourth rotating shaft, a fourth gear and a fourth rolling bearing;

[0022] The fourth rolling bearing is mounted on the housing, the fourth rotating shaft is rotatably mounted on the fourth rolling bearing, the fourth gear is mounted on the fourth rotating shaft, and the fourth gear is meshed with the third gear.

[0023] Preferably, the second output group further includes a fourth elastic retaining ring, a second spacer sleeve and a second oil seal;

[0024] The housing is provided with a fourth mounting hole, the fourth mounting hole is provided with the fourth rolling bearing, the fourth mounting hole is provided with a fourth mounting groove, the fourth mounting groove is provided with the fourth elastic retaining ring;

[0025] The second spacer and the second oil seal are respectively installed on the fourth rotating shaft, one end of the second spacer abuts against the fourth rolling bearing, the other end of the second spacer abuts against the fourth elastic retaining ring, and the second oil seal is located on the outside of the fourth elastic retaining ring.

[0026] In some embodiments, fifth mounting holes are respectively provided on the left and right sides of the shell, and the output end of the driving device can pass through the fifth mounting holes and be placed inside the shell.

[0027] Compared with the prior art, one of the above technical solutions has the following beneficial effects:

[0028] The transmission assembly is tightly placed in the housing through the housing, the driving device, the first bevel gear, the first transmission group, the second transmission group, the first output group and the second output group, so that the structure is more compact and space-saving. The output transmission adopts a bevel gear structure, which not only has a large transmission ratio, high transmission accuracy, stable transmission, high transmission efficiency and long service life, but also has low noise and vibration, which is conducive to the stability and reliability of long-term work, and two different output powers can be output through only a single driving force, which is applicable to many scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a structural schematic diagram of a helical gear double-drive reducer in one embodiment of the utility model;

[0030] Figure 2 This is a schematic structural diagram of a housing of one embodiment of the utility model;

[0031] Figure 3 It is a structural schematic diagram of a driving device of one embodiment of the utility model;

[0032] Figure 4 This is a schematic diagram of the structure of the first transmission group and the second transmission group of one embodiment of the utility model;

[0033] Figure 5 This is a schematic diagram of the structure of the first output group and the second output group of one embodiment of the utility model;

[0034] Wherein: housing 1, first mounting hole 11, first mounting groove 111, second mounting hole 12, second mounting groove 121, third mounting hole 13, third mounting groove 131, fourth mounting hole 14, fourth mounting groove 141, driving device 2, first bevel gear 21, first transmission group 3, first rotating shaft 31, first gear 32, second bevel gear 33, first rolling bearing 34, first circlip 35, second transmission group 4, second rotating shaft 41, second gear 42, third bevel gear 43, second rolling bearing 44, second circlip 45, first output group 5, third rotating shaft 51, third gear 52, third rolling bearing 54, third circlip 55, first spacer 56, first oil seal 57, second output group 6, fourth rotating shaft 61, fourth gear 62, fourth rolling bearing 64, fourth circlip 65, second spacer 66, second oil seal 67. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", "inner side", "outer side", "inner end", "outer end", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features, which are used to distinguish and describe the features, without distinction of order or importance. In the description of the present utility model, unless otherwise specified, "multiple" means more than two.

[0037] In one embodiment of the present invention, Figure 1-5 As shown, a helical gear double-transmission reducer with a double-sided mounting structure includes a housing 1, a driving device 2, a first transmission group 3, a second transmission group 4, a first output group 5 and a second output group 6; the first transmission group 3, the second transmission group 4, the first output group 5 and the second output group 6 are respectively rotatably mounted inside the housing 1, one end of the second transmission group 4 is meshed with the first transmission group 3, the other end of the second transmission group 4 is meshed with one end of the first output group 5, the other end of the first output group 5 is meshed with the second output group 6, and the first output group 5 and the second output group 6 are respectively used to output different powers;

[0038] The output end of the driving device 2 is provided with a first bevel gear 21, and the driving device 2 is used to drive the first transmission group 3 to rotate through the first bevel gear 21. In this embodiment, the driving device 2 is a motor. When installed, the driving device 2 is installed on the outside of the housing 1, and the first bevel gear 21 is installed on the output end of the driving device 2. The first transmission group 3, the second transmission group 4, the first output group 5 and the second output group 6 are installed inside the housing 1 respectively. One end of the first transmission group 3 is meshed with the first bevel gear 21, and the other end of the first transmission group 3 is meshed with one end of the second transmission group 4. The other end of the second transmission group 4 is meshed with one end of the first output group 5, and the other end of the second output group 5 is meshed with the second output group 6. The second output group 6 is located above the first output group 5, and the first transmission group 3 is located above the second transmission group 4. When working, the driving device 2 drives the first bevel gear 21 at its output end to rotate, and the first bevel gear 21 drives the first transmission group 3 and the second transmission group 4 in turn. The output group 5 rotates, so that the first output group 5 outputs a first power, and because the second output group 6 is engaged with the first output group 5, the second output group 6 outputs a second power through the first output group 5, and the powers output by the first output group 5 and the second output group 6 are different, so that the helical gear dual-transmission reducer can output two different powers; the application places the transmission assembly tightly in the housing 1 through the housing 1, the drive device 2, the first helical gear 21, the first transmission group 3, the second transmission group 4, the first output group 5 and the second output group 6, so as to make the structure more compact and save space, and adopts a helical gear structure for output transmission, which not only has a large transmission ratio, high transmission accuracy, stable transmission, high transmission efficiency and long service life, but also has low noise and vibration, which is conducive to the stability and reliability of long-term operation, and only needs to use a single driving force to output two different output powers, and is applicable to many scenarios.

[0039] like Figure 3-4As shown, the first transmission group 3 includes a first rotating shaft 31, a first gear 32, a second bevel gear 33 and a first rolling bearing 34; the first rolling bearing 34 is installed on the housing 1, the first rotating shaft 31 is rotatably installed on the first rolling bearing 34, the first gear 32 and the second bevel gear 33 are respectively installed on the first rotating shaft 31, the first gear 32 is meshed with the first bevel gear 21, and the second bevel gear 33 is meshed with the second transmission group 4. In this embodiment, the number of the first rolling bearings 34 is two, and the first rolling bearings 34 are deep groove ball bearings. The two first rolling bearings 34 are respectively mounted on the left and right inner walls of the housing 1, and the two first rolling bearings 34 are arranged opposite to each other. The left and right ends of the first rotating shaft 31 are respectively rotatably mounted on the two first rolling bearings 34. The first gear 32 and the second bevel gear 33 are respectively fixedly mounted on the first rotating shaft 31, and both can rotate synchronously with the first rotating shaft 31. The first gear 32 and the second bevel gear 33 are respectively located between the two first rolling bearings 34, and the first gear 32 is located on the right side of the second bevel gear 33. When working, the driving device 2 drives the first bevel gear 21 to rotate, and the first bevel gear 21 drives the first rotating shaft 31 to rotate on the first rolling bearing 34 through the first gear 32, so that the second bevel gear 33 rotates, and finally the second bevel gear 33 drives the second transmission group 4 to rotate. The helical gear transmission structure adopts not only a large transmission ratio, high transmission accuracy, stable transmission, and high transmission efficiency, but also small noise and vibration, and a long service life, thereby achieving the effect of improving the working stability and service life of the helical gear double transmission reducer.

[0040] like Figure 3-4As shown, the second transmission group 4 includes a second rotating shaft 41, a second gear 42, a third helical gear 43 and a second rolling bearing 44; the second rolling bearing 44 is installed on the housing 1, the second rotating shaft 41 can be rotatably installed on the second rolling bearing 44, the second gear 42 and the third helical gear 43 are respectively installed on the second rotating shaft 41, the second gear 42 is meshed with the second helical gear 33, and the third helical gear 43 is meshed with the first output group 5. In this embodiment, the number of the second rolling bearings 44 is two, the second rolling bearings 44 are deep groove ball bearings, the two second rolling bearings 44 are respectively installed on the left and right inner walls of the housing 1, and the two second rolling bearings 44 are arranged oppositely, the left and right ends of the second rotating shaft 41 are respectively rotatably installed on the two second rolling bearings 44, the second gear 42 and the third helical gear 43 are respectively fixedly installed on the first rotating shaft 41, and the two can rotate synchronously with the second rotating shaft 41, the second gear 42 is located on the left side of the third helical gear 43, and when working, the driving device 2 drives the first helical gear The wheel 21 rotates, and the first bevel gear 21 drives the second bevel gear 33 to rotate through the first gear 32 and the first rotating shaft 31. The second bevel gear 33 is meshed with the second gear 42, thereby driving the second gear 42 to rotate. The rotation of the second gear 42 causes the second rotating shaft 41 to rotate on the second rolling bearing 44, thereby causing the third bevel gear 43 to rotate. The helical gear transmission structure not only has a large transmission ratio, high transmission accuracy, stable transmission, and high transmission efficiency, but also has low noise and vibration and a long service life, thereby achieving the effect of improving the working stability and service life of the helical gear double-drive reducer.

[0041] like Figure 2-4As shown, the first transmission group 3 also includes a first elastic retaining ring 35, and the second transmission group 4 also includes a second elastic retaining ring 45; the housing 1 is provided with a first mounting hole 11 and a second mounting hole 12, the first mounting hole 11 is located above the second mounting hole 12, a first rolling bearing 34 is installed in the first mounting hole 11, the first mounting hole 11 is provided with a first mounting groove 111, the first elastic retaining ring 35 is installed in the first mounting groove 111, and the first elastic retaining ring 35 abuts against the end face of the first rolling bearing 34; a second rolling bearing 44 is installed in the second mounting hole, the second mounting hole 12 is provided with a second mounting groove 121, the second elastic retaining ring 45 is installed in the second mounting groove 121, and the second elastic retaining ring 45 abuts against the end face of the second rolling bearing 44. In this embodiment, the number of the first mounting hole 11, the second mounting hole 12, the first mounting groove 111, the second mounting groove 121, the first elastic circlip 35 and the second elastic circlip 45 are two respectively, the two first elastic circlips 35 are clamped in the two first mounting grooves 111, the two first elastic circlips 35 can abut against the end faces of the two first rolling bearings 34 to prevent them from slipping outwards, thereby improving the installation stability of the first rolling bearing 34, and the two second elastic circlips 45 are clamped in the two second mounting grooves 121, the two second elastic circlips can abut against the end faces of the two second rolling bearings 44 to prevent them from slipping outwards, thereby improving the installation stability of the second rolling bearing 44. It should be noted that the first rolling bearing 34 and the second rolling bearing 44 are specifically mounted on the limiting steps of the corresponding rotating shafts, respectively, and therefore cannot be moved inwards.

[0042] like Figure 2-5 As shown, the first output group 5 includes a third rotating shaft 51, a third gear 52 and a third rolling bearing 54; the third rolling bearing 54 is installed on the housing 1, the third rotating shaft 51 is rotatably installed on the third rolling bearing 54, the third gear 52 is installed on the third rotating shaft 51, one end of the third gear 52 is meshed with the third bevel gear 43, and the other end of the third gear 52 is meshed with the second output group 6. In this embodiment, the number of the third rolling bearings 54 is two, and the third rolling bearings 54 are tapered roller bearings. The two third rolling bearings 54 are respectively installed on the left and right inner walls of the housing 1, and the two third rolling bearings 54 are arranged oppositely. The left and right ends of the third rotating shaft 51 are respectively rotatably installed on the two third rolling bearings 54, and the end of the first rotating shaft 51 passes through the inner wall of the housing 1 and is placed on the outside of the housing 1. When working, the third bevel gear 43 drives the third gear 52 to rotate, thereby rotating the third rotating shaft 51, so that the end of the third rotating shaft 51 rotates to output power.

[0043] like Figure 2-5 As shown, the first output group 5 also includes a third elastic retaining ring 55, a first spacer sleeve 56 and a first oil seal 57; the housing 1 is provided with a third mounting hole 13, the third mounting hole 13 is provided with the third rolling bearing 54, the third mounting hole 13 is provided with a third mounting groove 131, the third elastic retaining ring 55 is installed in the third mounting groove 131; the first spacer sleeve 56 and the first oil seal 57 are respectively installed on the third rotating shaft 51, one end of the first spacer sleeve 56 abuts against the third rolling bearing 54, the other end of the first spacer sleeve 56 abuts against the third elastic retaining ring 55, and the first oil seal 57 is located on the outside of the third elastic retaining ring 55. In this embodiment, the number of the third elastic retaining ring 55, the first spacer sleeve 56, the first oil seal 57, the third mounting hole 13 and the third mounting groove 131 is two respectively, and the two third retaining rings 55 are respectively clamped in the two third mounting grooves 131, one end of the first spacer sleeve 56 abuts against the third rolling bearing 54, and the other end of the first spacer sleeve 56 abuts against the third elastic retaining ring 55, so as to ensure the installation stability of each component of the first output group 5 and make it difficult to loosen, and two first oil seals 57 are also installed to isolate the components that need to be lubricated in the transmission components from the output components to prevent leakage of lubricating oil.

[0044] like Figure 2-5 As shown, the second output group 6 includes a fourth rotating shaft 61, a fourth gear 62 and a fourth rolling bearing 64; the fourth rolling bearing 64 is installed on the housing 1, the fourth rotating shaft 61 is rotatably installed on the fourth rolling bearing 64, the fourth gear 62 is installed on the fourth rotating shaft 61, and the fourth gear 62 is meshed with the third gear 52. In this embodiment, the number of the fourth rolling bearings 64 is three, and the fourth rolling bearings 64 are deep groove ball bearings. Two of the fourth rolling bearings 64 are respectively installed on the right inner wall of the housing 1, and the two fourth rolling bearings 64 are arranged in close proximity. Another fourth rolling bearing 64 is installed on the left inner wall of the housing 1. The left and right ends of the fourth rotating shaft 61 are respectively rotatably installed on the two fourth rolling bearings 64. The end of the fourth rotating shaft 61 passes through the inner wall of the housing 1 and is placed on the outside of the housing 1. When working, the third gear 52 drives the fourth gear 62 to rotate, thereby rotating the fourth rotating shaft 61, so that the end of the fourth rotating shaft 61 rotates to output power.

[0045] like Figure 2-5As shown, the second output group 6 also includes a fourth elastic retaining ring 65, a second spacer sleeve 66 and a second oil seal 67; the housing 1 is provided with a fourth mounting hole 14, the fourth mounting hole 14 is provided with the fourth rolling bearing 64, the fourth mounting hole 14 is provided with a fourth mounting groove 141, the fourth elastic retaining ring 65 is installed in the fourth mounting groove 141; the second spacer sleeve 66 and the second oil seal 67 are respectively installed on the fourth rotating shaft 61, one end of the second spacer sleeve 66 abuts against the fourth rolling bearing 64, the other end of the second spacer sleeve 66 abuts against the fourth elastic retaining ring 65, and the second oil seal 67 is located on the outside of the fourth elastic retaining ring 65. In this embodiment, the number of the fourth elastic retaining ring 65, the second spacer sleeve 66, the second oil seal 67, the fourth mounting hole 14 and the fourth mounting groove 141 is two respectively, the two fourth retaining rings 65 are respectively clamped in the two fourth mounting grooves 141, one end of the second spacer sleeve 66 abuts against the fourth rolling bearing 64, and the other end of the second spacer sleeve 66 abuts against the fourth elastic retaining ring 65, so as to ensure the installation stability of each component of the second output group 6 and make it difficult to loosen, and two second oil seals 67 are also installed to isolate the components that need to be lubricated in the transmission components from the output components to prevent leakage of lubricating oil.

[0046] like Figure 2-3 As shown, the left and right sides of the housing 1 are respectively provided with fifth mounting holes 15, and the output end of the drive device 2 can pass through the fifth mounting holes 15 and be placed inside the housing 1. In this embodiment, the fifth mounting holes 15 are respectively provided on the left and right sides of the housing 1, so that the output end of the drive device 2 can be placed inside the housing 1 from the fifth mounting holes 15 on the left or right side, that is, the drive device 2 can be installed on the left side or the inner side of the housing 1, realizing a double-sided mounting structure, which is suitable for different installation scenarios, and achieves the effect of improving the versatility of the helical gear dual-drive reducer.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0048] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate 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 claims and their equivalents.

Claims

1. A helical gear double-drive reducer with a double-sided mounting structure, characterized in that: It includes a housing, a driving device, a first transmission group, a second transmission group, a first output group and a second output group; The first transmission group, the second transmission group, the first output group and the second output group are rotatably mounted inside the housing, one end of the second transmission group is meshed with the first transmission group, the other end of the second transmission group is meshed with one end of the first output group, the other end of the first output group is meshed with the second output group, and the first output group and the second output group are respectively used to output different powers; The output end of the driving device is provided with a first bevel gear, and the driving device is used to drive the first transmission group to rotate through the first bevel gear.

2. The helical gear double-drive reducer with double-sided mounting structure according to claim 1, characterized in that: The first transmission group includes a first rotating shaft, a first gear, a second helical gear and a first rolling bearing; The first rolling bearing is installed on the housing, the first rotating shaft is rotatably installed on the first rolling bearing, the first gear and the second bevel gear are respectively installed on the first rotating shaft, the first gear is meshed with the first bevel gear, and the second bevel gear is meshed with the second transmission group.

3. The helical gear double-drive reducer with double-sided mounting structure according to claim 2, characterized in that: The second transmission group includes a second rotating shaft, a second gear, a third helical gear and a second rolling bearing; The second rolling bearing is mounted on the housing, the second shaft is rotatably mounted on the second rolling bearing, the second gear and the third bevel gear are respectively mounted on the second shaft, the second gear is meshed with the second bevel gear, and the third bevel gear is meshed with the first output group.

4. The helical gear double-drive reducer with double-sided mounting structure according to claim 3, characterized in that: The first transmission group further includes a first elastic retaining ring, and the second transmission group further includes a second elastic retaining ring; The housing is provided with a first mounting hole and a second mounting hole, the first mounting hole is located above the second mounting hole, a first rolling bearing is installed in the first mounting hole, the first mounting hole is provided with a first mounting groove, the first elastic retaining ring is installed in the first mounting groove, and the first elastic retaining ring abuts against the end surface of the first rolling bearing; The second mounting hole is provided with a second rolling bearing, the second mounting hole is provided with a second mounting groove, the second elastic retaining ring is mounted in the second mounting groove, and the second elastic retaining ring abuts against the end surface of the second rolling bearing.

5. The helical gear double-drive reducer with double-sided mounting structure according to claim 3, characterized in that: The first output group includes a third rotating shaft, a third gear and a third rolling bearing; The third rolling bearing is mounted on the housing, the third rotating shaft is rotatably mounted on the third rolling bearing, the third gear is mounted on the third rotating shaft, one end of the third gear is meshed with the third bevel gear, and the other end of the third gear is meshed with the second output group.

6. The helical gear double-drive reducer with double-sided mounting structure according to claim 5, characterized in that: The first output group further includes a third elastic retaining ring, a first spacer sleeve and a first oil seal; The housing is provided with a third mounting hole, the third rolling bearing is installed in the third mounting hole, the third mounting hole is provided with a third mounting groove, the third elastic retaining ring is installed in the third mounting groove; The first spacer and the first oil seal are respectively installed on the third rotating shaft, one end of the first spacer abuts against the third rolling bearing, the other end of the first spacer abuts against the third elastic retaining ring, and the first oil seal is located on the outside of the third elastic retaining ring.

7. The helical gear double-drive reducer with double-sided mounting structure according to claim 5, characterized in that: The second output group includes a fourth rotating shaft, a fourth gear and a fourth rolling bearing; The fourth rolling bearing is mounted on the housing, the fourth rotating shaft is rotatably mounted on the fourth rolling bearing, the fourth gear is mounted on the fourth rotating shaft, and the fourth gear is meshed with the third gear.

8. The helical gear double-drive reducer with double-sided mounting structure according to claim 7, characterized in that: The second output group further includes a fourth elastic retaining ring, a second spacer sleeve and a second oil seal; The housing is provided with a fourth mounting hole, the fourth mounting hole is provided with the fourth rolling bearing, the fourth mounting hole is provided with a fourth mounting groove, the fourth mounting groove is provided with the fourth elastic retaining ring; The second spacer and the second oil seal are respectively installed on the fourth rotating shaft, one end of the second spacer abuts against the fourth rolling bearing, the other end of the second spacer abuts against the fourth elastic retaining ring, and the second oil seal is located on the outside of the fourth elastic retaining ring.

9. The helical gear double-drive reducer with double-sided mounting structure according to claim 1, characterized in that: The left and right sides of the shell are respectively provided with fifth mounting holes, and the output end of the driving device can pass through the fifth mounting holes and be placed inside the shell.

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