Synchronous multi-speed output single-shaft driving assembly

Abstract

The utility model relates to a synchronous multi-speed output single-shaft driving assembly which is characterized by comprising an engine with a rotating shaft and a transmission part, the transmission part and the rotating shaft are coaxially arranged and connected in a linkage mode, and one end of the rotating shaft penetrates through the transmission part to be arranged outside the transmission part to be used for installing a first workpiece. The engine drives the rotating shaft to output kinetic energy at a first rotating speed to drive a first workpiece, and the transmission piece synchronously outputs kinetic energy at a second rotating speed to drive a second workpiece mounted on the transmission piece; the second rotating speed of the transmission part is lower than the first rotating speed. The utility model has the beneficial effects that the transmission part is coaxially arranged outside the rotating shaft, and the transmission part outputs kinetic energy at the second rotating speed lower than the first rotating speed of the rotating shaft to drive the second workpiece to work, so that two different rotating speeds are output by single drive, different workpieces are respectively driven to work, and the maximum utilization of the output power of the engine is realized; the transmission structure is optimized, different engines are not needed to drive different workpieces to work, the production cost is saved, occupied space is reduced, and the energy utilization efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a driving device for power output, and more specifically to a single-shaft driving assembly capable of synchronously outputting different rotation speeds, and can be widely used in the field of power transmission of various types of equipment. Background Art

[0002] The power transmission devices used in existing equipment are mostly motors, especially various electronic products, such as shavers, hair clippers, hair trimmers, etc.

[0003] However, the power output of existing single-axis motors is basically one speed output power, for example, output at the rated speed of the motor, or control the input current / voltage of the motor through a frequency conversion mechanism to slow down the output speed of the motor, but the final result is that the output shaft of the motor can only output power at a predetermined rate. This type of motor can meet the use requirements of most products on the market, but for some special products, it is necessary to work at two different speeds at the same time. Obviously, the existing motors cannot meet the use requirements. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a single-shaft drive assembly with synchronous multi-speed output, which can use a single-shaft engine to output two different speeds to drive different loads to work respectively, so as to meet the use requirements of some special products.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is a single-shaft drive assembly with synchronous multi-speed output, including an engine and a transmission member with a rotating shaft, the transmission member is coaxially arranged and linked with the rotating shaft, and one end of the rotating shaft passes through the transmission member and is placed outside the transmission member for installing a first workpiece, the engine drives the rotating shaft to output kinetic energy at a first speed to drive the first workpiece, and the transmission member synchronously outputs kinetic energy at a second speed to drive the second workpiece installed on the transmission member; the second speed of the transmission member is lower than the first speed of the rotating shaft.

[0006] Preferably, a spline is provided on the rotating shaft and a main gear is fixed at the spline, and the main gear rotates synchronously with the first speed of the rotating shaft; the transmission member is transmission-connected to the main gear and outputs kinetic energy at a second speed to drive the second workpiece.

[0007] Preferably, the transmission member includes at least one transmission plate, a sub-gear and a gear sleeve. The gear sleeve is in the shape of a hollow ring and is provided with a plurality of transmission teeth on its inner circumferential side wall. The transmission plate is sleeved outside the rotating shaft and cooperates with the rotating shaft clearance. The sub-gear is mounted on the transmission plate and meshes with the transmission teeth and the main gear respectively. One end of the gear sleeve is connected and fixed to the casing of the engine, and the other end rotatably confines the transmission plate in the gear sleeve, so that one end face of the transmission plate is placed outside the gear sleeve for mounting the second workpiece.

[0008] Preferably, three auxiliary gears are provided, which are arranged in a planetary distribution and sleeved outside the gear shaft installed on the transmission plate.

[0009] Preferably, the gear sleeve is detachably connected and fixed to the base, and the base is placed on an end surface of an engine setting shaft and is fixedly connected to the engine casing.

[0010] Preferably, the transmission plate includes a first reduction plate, a second reduction plate and a third reduction plate which are stacked and sleeved along the rotating shaft and cooperate with the rotating shaft clearance. The first reduction plate can rotatably cooperate with the gear sleeve and its end face is placed outside the gear sleeve for mounting the second workpiece; secondary gears are respectively provided on the upper end faces of the second reduction plate and the third reduction plate; a gear shaft is respectively provided on the lower end face of each reduction plate and a sub-gear is respectively installed outside each gear shaft, and the sub-gear installed on the lower end face of the first reduction plate meshes with the secondary gear on the upper end face of the second reduction plate and the transmission teeth on the gear sleeve; the sub-gear installed on the lower end face of the second reduction plate meshes with the secondary gear of the third reduction plate and the transmission teeth on the gear sleeve; the sub-gear installed on the lower end face of the third reduction plate meshes with the main gear outside the rotating shaft and the transmission teeth on the gear sleeve, so that the second rotation speed of the first reduction plate is lower than the first rotation speed of the rotating shaft.

[0011] Preferably, at least two hook rings are provided on the outer peripheral side wall of the gear sleeve, and pins with barbs are provided at corresponding positions of the base. Each pin is inserted into the corresponding hook ring so that the barb cooperates with the end face of the hook ring, so that the gear sleeve can be detachably connected and fixed to the base.

[0012] Preferably, at least one positioning hole is provided on the end surface of the gear sleeve in contact with the base, and a positioning insert is provided at a corresponding position of the base.

[0013] Preferably, a limiting ring is provided on the gear sleeve, and the inner diameter of the limiting ring is larger than the outer diameter of the first reduction plate, so that the first reduction plate can be rotatably placed in the gear sleeve.

[0014] Preferably, an adapter seat for mounting the second workpiece is provided on the upper end surface of the first reduction plate. The adapter seat extends beyond the gear sleeve and can be an integral / or separate structure with the first reduction plate.

[0015] The beneficial effect of the utility model is that a coaxially mounted transmission member is arranged outside the rotating shaft, and the transmission member outputs kinetic energy at a second rotational speed lower than the first rotational speed of the rotating shaft to drive the second workpiece to work. In this way, a single drive output of two different rotational speeds can be achieved, and each drives a different workpiece to work, thereby maximizing the utilization of the engine output power, optimizing the transmission structure without setting up different engines to drive different workpieces to work, saving production costs, reducing space occupancy, and improving energy utilization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1A three-dimensional structural diagram of a single-axis drive assembly with synchronous multi-speed output according to an embodiment of the utility model

[0017] Figure 2 A rotating stereoscopic cross-sectional view of a single-axis drive assembly with synchronous multi-speed output according to an embodiment of the utility model

[0018] Figure 3 A three-dimensional partial cross-sectional view of a single-axis drive assembly with synchronous multi-speed output according to an embodiment of the utility model

[0019] Figure 4 The three-dimensional structure diagram of the engine in the embodiment of the utility model

[0020] Figure 5 This is a front view of the three-dimensional structure of the first deceleration plate in the embodiment of the utility model

[0021] Figure 6 This is a bottom view of the first deceleration plate in the embodiment of the utility model.

[0022] Figure 7 This is a front view of the third embodiment of the utility model.

[0023] Figure 8 This is a bottom view of the second deceleration plate in the embodiment of the utility model.

[0024] Fig. 9 This is a front view of the gear sleeve in the embodiment of the utility model

[0025] Fig.10 This is a bottom view of the gear sleeve in the embodiment of the utility model.

[0026] Fig.11 A three-dimensional structural diagram of the base in the embodiment of the utility model DETAILED DESCRIPTION

[0027] The following is combined with Figures 1 to 11 The implementation mode of the utility model is further described as follows:

[0028] The utility model is a single-axis drive assembly with synchronous multi-speed output, including an engine 1 with a rotating shaft 2. The engine 1 refers to a machine that must have a single output rotating shaft 2 to convert other material energy into mechanical energy, such as an electric motor. In order to realize that the single-axis motor outputs two different speed kinetic energies at the same time, the transmission member 3 is coaxially arranged with the rotating shaft 2 and linked, and one end of the rotating shaft 2 passes through the transmission member 3 and is placed outside the transmission member 3 for mounting a first workpiece. The engine 1 drives the rotating shaft 2 to output kinetic energy at a first speed to drive the first workpiece, and the transmission member 3 is driven by the rotating shaft 2 to synchronously output kinetic energy at a second speed in the same or opposite rotation direction to drive the second workpiece installed on the transmission member 3. In actual use, the rotation direction of the transmission member 3 is set opposite to the rotation direction of the rotating shaft 2, and the second speed of the transmission member 3 is lower than the first speed of the rotating shaft 2. By arranging a coaxially mounted transmission member 3 outside the rotating shaft 2, and making the transmission member 3 output kinetic energy at a second rotational speed lower than the first rotational speed of the rotating shaft 2 to drive the second workpiece to work, it is possible to achieve a single-drive output of two different rotational speeds, and each drives a different workpiece to work, thereby maximizing the utilization of the output power of the engine 1 and optimizing the transmission structure without having to set up different engines 1 to drive different workpieces to work, saving production costs, reducing space occupancy, and improving energy utilization efficiency.

[0029] The first speed refers to the rated output speed of the shaft 2 of the engine 1, and the second speed is formed by deceleration based on the first speed. The deceleration can be one-stage deceleration or multi-stage deceleration, which can be determined according to actual needs. Therefore, the second speed is not a specific value, but is only used to limit the rotation speed of the transmission member 3 to be lower than the shaft 2, which is hereby explained.

[0030] The following uses a rotary shaver as an example to introduce the application scenarios of the drive assembly. The following application scenarios are only to facilitate the relevant stakeholders or the public to understand the technical points of the technical solution and cannot be regarded as restrictions on the application scenarios of the drive assembly:

[0031] As is known to all, a rotary shaver has a stationary blade that contacts the skin, and a moving blade that rotates along the stationary blade to cut the beard. Since the stationary blade of the existing rotary shaver is basically fixed, it means that the direction of the beard hole in the stationary blade is fixed, while the beard grows in different directions. Some beards are not easy to enter the stationary blade because their growth direction is different from the opening direction of the beard hole, which reduces the efficiency of the beard entering the hair; and the inclination angle of the beard will basically not change after entering the stationary blade. If the inclination angle of the beard entering the stationary blade is opposite to the rotation direction of the moving blade, when the moving blade contacts the beard, the beard will be restricted by the beard hole in the stationary blade and a reaction force will be formed, thereby facilitating the moving blade to cut the beard. If the inclination angle of the beard entering the stationary blade is the same as the rotation direction of the moving blade, the moving blade will not be able to form a reverse force after contacting the beard, which is not conducive to beard trimming. It can be seen that setting the static blade of a rotary shaver to dynamic can not only allow beards with different growth directions to enter the static blade, thereby improving the beard entry efficiency of the static blade; at the same time, it can also dynamically adjust the inclination angle of the beard entering the static blade in real time, thereby facilitating the trimming of the beard by the moving blade and improving the beard trimming efficiency.

[0032] During actual use, the rotating shaft 2 is used to drive the moving blade of the rotary shaver to rotate at a first speed (i.e., the rated speed of the motor), and the stationary blade can be connected to the transmission member 3. Driven by the rotating shaft 2, the transmission member 3 can drive the stationary blade to rotate at a lower second speed to adjust the direction of the beard hole in the stationary blade to adapt to the beards with different growth directions entering the stationary blade through the beard hole, and dynamically adjust the inclination angle of the beard after entering the stationary blade, so that the beard entering the stationary blade is at a trimming inclination angle opposite to the rotation direction of the moving blade, thereby achieving the purpose of improving the beard trimming efficiency. Since the stationary blade needs to take into account the introduction of the beard and cooperate with the moving blade to trim the beard, the second speed of the transmission member 3 must be lower than the first speed of the rotating shaft 2. If it rotates too fast, the beard cannot enter the stationary blade through the beard hole.

[0033] In order to facilitate the synchronous rotation of the transmission member 3 and the rotating shaft 2, a spline 21 is provided on the rotating shaft 2 and a main gear 4 is fixed at the spline 21. The main gear 4 rotates synchronously with the first speed of the rotating shaft 2. The transmission member 3 is connected to the main gear 4 and outputs kinetic energy at the second speed to drive the second workpiece. Since the second speed of the transmission member 3 cannot be too fast, installing the main gear 4 on the rotating shaft 2 can not only facilitate the synchronous linkage of the transmission member 3 and the rotating shaft 2, but also achieve the deceleration of the second speed of the transmission member 3 by controlling the module of the gear. Of course, the spline 21 cannot be set when installing the main gear 4. For example, pin holes can be set on the main gear 4 and the rotating shaft 2. The main gear 4 can be fixedly connected to the rotating shaft 2 by pins to achieve the same purpose. However, the spline 21 is easy to produce and process, so it is the preferred implementation of this embodiment.

[0034] Since the transmission member 3 needs to rotate synchronously at a second speed lower than the first speed of the rotating shaft 2, in order to realize the synchronous linkage between the transmission member 3 and the rotating shaft 2 and output kinetic energy at different speeds, the transmission member 3 includes at least one transmission plate 31, a sub-gear 32 and a gear sleeve 33. The gear sleeve 33 is a hollow ring shape and is provided with a plurality of transmission teeth 331 on its inner circumferential side wall. The transmission plate 31 is sleeved outside the rotating shaft 2 and is gap-matched with the rotating shaft 2. The sub-gear 32 is installed on the transmission plate 31 and meshes with the transmission teeth 331 and the main gear 4 respectively; one end of the gear sleeve 33 is connected and fixed to the outer casing of the engine 1, and the other end rotatably confines the transmission plate 31 in the gear sleeve 33, so that one end face of the transmission plate 31 is placed outside the gear sleeve 33 for mounting the second workpiece. The secondary gear 32 is mounted on the transmission disc 31, and the secondary gear 32 is meshed with the transmission teeth 331 on the inner wall of the main gear 4 and the gear sleeve 33. When the main gear 4 rotates with the rotating shaft 2, the secondary gear 32 also rotates synchronously and moves in a circle along the gear sleeve 33. Since the transmission disc 31 and the rotating shaft 2 are clearance-matched, the secondary gear 32 can drive the transmission disc 31 to rotate at the second speed in the opposite direction of the rotating shaft 2. During assembly, the second workpiece is fixed on the transmission disc 31, and the transmission disc 31 moves in the opposite direction of the rotating shaft 2. The second workpiece can also rotate in the opposite direction relative to the first workpiece mounted on the rotating shaft 2. Of course, if the transmission disc 31 and the rotating shaft 2 are required to rotate in the same direction at the second speed, the number of secondary gears 32 can be increased between the primary gear 4 and the transmission teeth 331 of the gear sleeve 33. The specific number can be determined according to actual needs. In this embodiment, it is preferred that the transmission disc 31 and the rotating shaft 2 rotate in the opposite direction. Since the transmission teeth 331 on the inner wall of the gear sleeve 33 have more teeth than the main gear 4, when the sub-gear 32 drives the transmission plate 31 to rotate one circle along the transmission teeth 331 of the gear sleeve 33, the main gear 4 has rotated multiple circles driven by the rotating shaft 2. Therefore, the rotation of the transmission plate 31 is decelerated and the kinetic energy can be output at a second speed lower than the first speed of the rotating shaft 2 to drive the second working rotational motion.

[0035] In order to ensure the stability and reliability of the rotational motion of the transmission disc 31, three auxiliary gears 32 are provided, which are arranged in a planetary distribution outside the gear shaft 314 installed on the transmission disc 31. The auxiliary gears 32 are arranged in a planetary distribution, which can make the power transmission between the main gear 4 and the transmission teeth 331 on the inner wall of the gear sleeve 33 more balanced, ensure the smoothness of the rotation of the transmission disc 31, and thus improve the working stability of the second workpiece installed on the transmission disc 31. Of course, more auxiliary gears can be provided, but three auxiliary gears are sufficient to ensure that the transmission disc 31 can rotate more smoothly at the second speed, so the embodiment of this embodiment is a preferred embodiment.

[0036] Since the transmission teeth 331 are arranged on the inner side wall of the gear sleeve 33, in order to facilitate the production, processing and assembly of the transmission teeth 331, the gear sleeve 33 is detachably connected and fixed to the base 5, and the base 5 is placed on an end surface of the rotating shaft 2 of the engine 1 and is fixedly connected to the outer shell of the engine 1. By detachably connecting and fixing the gear sleeve 33 and the base 5, at least one end of the gear sleeve 33 can be set to an open shape, so that it is convenient to process the inner side wall of the gear sleeve 33 to form the transmission teeth 331.

[0037] Since the rated speed of the motors used in existing electric rotary shavers is at least 3000 rpm, and the speed of the static blade of the electric rotary shaver cannot be too fast, the second speed of the transmission disc 31 must be decelerated to adapt to the hair introduction of the static blade. In order to achieve the deceleration of the transmission disc 31, the transmission disc 31 includes a first reduction disc 311, a second reduction disc 312 and a third reduction disc 313 stacked and sleeved along the rotating shaft 2 and loosely matched with the rotating shaft 2. The first reduction disc 311 can be rotatably matched with the gear sleeve 33 and its end face is placed outside the gear sleeve 33 for mounting the second workpiece; the second reduction disc 312 and the third reduction disc 313 are respectively provided with secondary gears 6 on the upper end faces; gear shafts 314 are respectively provided on the lower end faces of each reduction disc and sub-gears 32 are respectively installed outside each gear shaft 314, which are installed on the first reduction disc. The secondary gear 32 on the lower end surface of the speed disc 311 meshes with the secondary gear 6 on the upper end surface of the second speed disc 312 and the transmission teeth 331 on the gear sleeve 33; the secondary gear 32 installed on the lower end surface of the second speed disc 312 meshes with the secondary gear 6 of the third speed disc 313 and the transmission teeth 331 on the gear sleeve 33; the secondary gear 32 installed on the lower end surface of the third speed disc 313 meshes with the main gear 4 outside the rotating shaft 2 and the transmission teeth 331 on the gear sleeve 33, so that the second speed of the first speed disc 311 is lower than the first speed of the rotating shaft 2. By setting the transmission disc 31 as the first speed disc 311, the second speed disc 312 and the third speed disc 313 of three-stage speed reduction, the first speed of the rotating shaft 2 can be reduced to a suitable second speed to drive the first speed disc 311 to rotate without occupying a large amount of space, so that the static knife (which can be regarded as the second workpiece) rotates at a low speed to adapt to the beards of different growth directions entering the static knife, thereby improving the beard introduction efficiency and trimming efficiency of the static knife. Of course, it can also be set as a two-stage deceleration structure, for example, only the first deceleration plate 311 and the second deceleration plate 312 are set, or more deceleration plates are set to achieve more levels of deceleration, which can be determined according to actual needs and is not further limited in this embodiment.

[0038] In the actual assembly process, whether it is the first reduction disc 311, the second reduction disc 312 or the third reduction disc 313, the pinion gear 32 installed at the bottom end surface thereof is meshed with the main gear 4 or the secondary gear 6 and the transmission teeth 331 on the inner wall of the gear sleeve 33, so that the corresponding first reduction disc 311, the second reduction disc 312 and the third reduction disc 313 are suspended in the air and keep a coaxial clearance fit with the rotating shaft 2. Secondly, the first reduction disc 311, the second reduction disc 312, the third reduction disc 313, the pinion gear 32, the secondary gear 6 and the main gear 4 are all in end-face contact. Therefore, under normal circumstances, the first reduction disc 311, the second reduction disc 312 and the third reduction disc 313 will not interfere with each other, and the multi-stage deceleration is realized to ensure that the first reduction disc 311 can output power steadily at a second speed lower than the first speed of the rotating shaft 2 to drive the second workpiece to work.

[0039] Since the third speed reduction plate 313 and the second speed reduction plate 312 have the same structure, their structures are not repeatedly shown in the drawings of the specification, and are hereby explained.

[0040] In order to facilitate the rapid assembly and disassembly of the gear sleeve 33 and the base 5, at least two hook rings 332 are provided on the outer peripheral side wall of the gear sleeve 33, and pins 51 with barbs are provided at corresponding positions of the base 5. Each pin 51 is inserted into the corresponding hook ring 332 so that the barb matches the end face of the hook ring 332, so that the gear sleeve 33 can be detachably connected and fixed to the base 5. By providing the hook ring 332 and the corresponding pin 51, the pin 51 can be directly inserted into the hook ring 332 during assembly, which can greatly improve the assembly efficiency of the gear. If the drive assembly is applied to other mechanical fields, the gear sleeve 33 is connected and fixed to the base 5 through a flange to ensure its working strength. The specific setting structure can be determined according to actual needs or working conditions. This embodiment is the best embodiment when the drive assembly is applied to personal care products such as shavers.

[0041] In order to ensure the coaxiality between the gear and the rotating shaft 2, at least one positioning hole 333 is provided on the end surface of the gear sleeve 33 in contact with the base 5, and a positioning insert 52 is provided at the corresponding position of the base 5. Since the base 5 is fixed to the housing of the engine 1 based on the rotating shaft 2, when assembling the gear sleeve 33, the coaxiality between the gear sleeve 33 and the rotating shaft 2 can be effectively ensured by inserting the positioning insert 52 provided on the base 5 into the positioning hole 333 in the gear sleeve 33, thereby reducing the assembly error and improving the running stability of the drive assembly. Of course, there are many structures for achieving positioning, such as the matching of the pin and the pin hole, but the use of the positioning hole 333 and the positioning insert 52 structure is not only convenient for production cost, but also can effectively improve the radial force strength of the gear sleeve 33 and the base 5, and prevent the gear sleeve 33 and the base 5 from being misaligned due to unexpected factors such as bumps and collisions, thereby affecting the reliability of the drive assembly.

[0042] The second workpiece is connected to the first reduction disc 311, and the second speed of the first reduction disc 311 rotates at the first speed of the synchronous shaft 2. In order to prevent the first reduction disc 311 from being separated from the gear sleeve 33 and affecting the working stability of the first reduction disc 311, a limit ring 334 is provided on the gear sleeve 33. The inner diameter of the limit ring 334 is larger than the outer diameter of the first reduction disc 311, so that the first reduction disc 311 can be rotatably placed in the gear sleeve 33. The limit ring 334 can not only limit the first reduction disc 311 to be rotatable in the gear sleeve 33 to ensure the rotation stability of the first reduction disc 311, but also the limit ring 334 can indirectly prevent the second reduction disc 312 and the third reduction disc 313 from axial movement by pressing and limiting the first reduction disc 311, thereby ensuring the working stability of each reduction disc in the multi-stage reduction.

[0043] In order to facilitate the assembly of the second workpiece, an adapter seat 315 for mounting the second workpiece is provided on the upper end face of the first reduction disc 311. The adapter seat 315 exceeds the gear sleeve 33 and can be an integral / or separate structure with the first reduction disc 311. By adding the adapter seat 315 to the upper end face of the first reduction disc 311 and making the adapter seat 315 protrude from the upper end face of the gear sleeve 33, when assembling the second workpiece, the gear sleeve 33 will not interfere with the assembly work, thereby improving the assembly efficiency. In the actual production process, the adapter seat 315 can be an integrally molded structure with the first reduction disc 311, or a separate and detachable connection structure with the adapter seat 315. However, since the first reduction disc 311 is a plastic part, the adapter seat 315 and the first reduction disc 311 in this embodiment are an integral injection molding structure, which can greatly improve the production efficiency of the first reduction disc 311 and reduce the production cost.

[0044] The above embodiments should not be regarded as limiting the present invention, but any improvements based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A single-axis drive assembly with synchronous multi-speed output, characterized in that The invention comprises an engine (1) having a rotating shaft (2) and a transmission member (3); the transmission member (3) is coaxially arranged with the rotating shaft (2) and linked to each other; one end of the rotating shaft (2) passes through the transmission member (3) and is arranged outside the transmission member (3) for mounting a first workpiece; the engine (1) drives the rotating shaft (2) to output kinetic energy at a first rotation speed to drive the first workpiece; the transmission member (3) synchronously outputs kinetic energy at a second rotation speed to drive a second workpiece mounted on the transmission member (3); the second rotation speed of the transmission member (3) is lower than the first rotation speed of the rotating shaft (2).

2. The single-axis drive assembly with synchronous multi-speed output according to claim 1, characterized in that A spline (21) is provided on the rotating shaft (2) and a main gear (4) is fixed at the spline (21). The main gear (4) rotates synchronously with the first rotation speed of the rotating shaft (2). The transmission member (3) is transmission-connected with the main gear (4) and outputs kinetic energy at a second rotation speed to drive the second workpiece.

3. The single-axis drive assembly with synchronous multi-speed output according to claim 1, characterized in that The transmission member (3) comprises at least one transmission disc (31), a sub-gear (32) and a gear sleeve (33); the gear sleeve (33) is in a hollow ring shape and is provided with a plurality of transmission teeth (331) on its inner peripheral side wall; the transmission disc (31) is sleeved outside the rotating shaft (2) and is clearance-matched with the rotating shaft (2); the sub-gear (32) is mounted on the transmission disc (31) and is meshed with the transmission teeth (331) and the main gear (4) respectively; one end of the gear sleeve (33) is connected and fixed to the housing of the engine (1); the other end of the gear sleeve (33) rotatably limits the transmission disc (31) in the gear sleeve (33), so that one end surface of the transmission disc (31) is placed outside the gear sleeve (33) for mounting a second workpiece.

4. The single-shaft drive assembly with synchronous multi-speed output according to claim 3, characterized in that There are three auxiliary gears (32) which are arranged in a planetary arrangement and sleeved outside a gear shaft (314) mounted on the transmission plate (31).

5. The single-shaft drive assembly with synchronous multi-speed output according to claim 3, characterized in that The gear sleeve (33) is detachably connected and fixed to the base (5); the base (5) is placed on an end surface of a rotating shaft (2) of the engine (1) and is fixedly connected to the outer shell of the engine (1).

6. The single-shaft drive assembly with synchronous multi-speed output according to claim 3, characterized in that The transmission disc (31) comprises a first reduction disc (311), a second reduction disc (312) and a third reduction disc (313) which are stacked and sleeved along the rotating shaft (2) and are clearance-matched with the rotating shaft (2); the first reduction disc (311) is rotatably matched with the gear sleeve (33) and its end face is arranged outside the gear sleeve (33) for mounting a second workpiece; secondary gears (6) are respectively arranged on the upper end faces of the second reduction disc (312) and the third reduction disc (313); gear shafts (314) are respectively arranged on the lower end faces of each reduction disc and sub-gears (32) are respectively mounted outside each gear shaft (314); and the first reduction disc (311) is mounted on the lower end face of the first reduction disc (311). The auxiliary gear (32) is respectively meshed with the secondary gear (6) on the upper end surface of the second reduction plate (312) and the transmission teeth (331) on the gear sleeve (33); the auxiliary gear (32) installed on the lower end surface of the second reduction plate (312) is meshed with the secondary gear (6) of the third reduction plate (313) and the transmission teeth (331) on the gear sleeve (33); the auxiliary gear (32) installed on the lower end surface of the third reduction plate (313) is meshed with the main gear (4) outside the rotating shaft (2) and the transmission teeth (331) on the gear sleeve (33), so that the second rotation speed of the first reduction plate (311) is lower than the first rotation speed of the rotating shaft (2).

7. The single-shaft drive assembly with synchronous multi-speed output according to claim 5, characterized in that At least two hook rings (332) are provided on the outer peripheral side wall of the gear sleeve (33), and pins (51) with barbs are provided at corresponding positions of the base (5). Each pin (51) is inserted into the corresponding hook ring (332) so that the barbs match with the end surface of the hook ring (332), so that the gear sleeve (33) is detachably connected and fixed to the base (5).

8. The single-shaft drive assembly with synchronous multi-speed output according to claim 6, characterized in that At least one positioning hole (333) is provided on the end surface of the gear sleeve (33) in contact with the base (5), and a positioning insert (52) is provided at a corresponding position of the base (5).

9. The single-shaft drive assembly with synchronous multi-speed output according to claim 6, characterized in that A limiting ring (334) is provided on the gear sleeve (33), and the inner diameter of the limiting ring (334) is larger than the outer diameter of the first reduction plate (311), so that the first reduction plate (311) can be rotatably placed in the gear sleeve (33).

10. The single-shaft drive assembly with synchronous multi-speed output according to claim 6, characterized in that An adapter seat (315) for mounting a second workpiece is provided on the upper end surface of the first reduction plate (311). The adapter seat (315) extends beyond the gear sleeve (33) and can be an integral / or separate structure with the first reduction plate (311).

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