Dual-drive electric roller

Abstract

The utility model belongs to the field of electric rollers, and particularly relates to a dual-drive electric roller. Comprising two groups of electric mechanisms and a connecting shaft, the electric mechanism comprises a supporting shaft, a connecting piece, a gear motor, a first rotating sleeve, a second rotating sleeve, a roller and a rolling bearing. The supporting shaft rotatably penetrates through the first rotating sleeve, one end of the supporting shaft is fixedly connected with the connecting piece, and the other end of the supporting shaft is a supporting end and used for being supported on the mounting frame. The gear motor is connected with the connecting piece, the other end is provided with an output shaft, and the second rotating sleeve is arranged on the output shaft; two ends of the roller are respectively sleeved on the first rotating sleeve and the second rotating sleeve; the rolling bearing is arranged at one end of the roller close to the second rotating sleeve; and the connecting shaft is connected with the rolling bearings of the two electric mechanisms. The two groups of electric mechanisms are mutually independent and do not interfere with each other, when one group breaks down and stops running, the other group continues to run to enable the conveying belt on the roller to deviate, faults can be found in time, and the situation that the normally-running electric mechanisms are damaged due to overload is avoided.

Description

Technical Field

[0001] The utility model belongs to the field of electric rollers, and in particular relates to a double-drive electric roller. Background Art

[0002] The electric roller is the main component for transmitting power in belt conveyors and other equipment. It is widely used in metallurgy, mining, coal, building materials, logistics and other industries due to its high transmission efficiency, stable operation and easy installation. However, since the objects transported by the conveyor line are of different sizes and the objects cannot be guaranteed to be always in the middle of the conveyor during the conveying process, they are prone to deviate to one side of the belt during the conveying process and press one side of the electric roller. If the weight of the object is large enough, the electric roller will be pressed to make the power output unbalanced, which will cause the electric roller to be worn and reduce its service life.

[0003] In order to solve the above-mentioned technical defects, the Chinese patent document with publication number CN213833325U discloses a permanent magnetic disc electric drum, comprising a drum body, a drum shaft, a left end cover, a right end cover and a plurality of permanent magnetic disc motors located in the drum body, the plurality of permanent magnetic disc motors are connected in parallel and coaxially installed on the drum shaft, the plurality of permanent magnetic disc motors are located between the left end cover and the right end cover, the rotor of each permanent magnetic disc motor is fixedly connected to the inner wall of the drum body, and the stator of each permanent magnetic disc motor is fixedly connected to the drum shaft; when one of the motor coils is damaged, it will not cause the entire electric drum to be unusable, thereby avoiding load shutdown or emergency shutdown.

[0004] However, in the technical solution of the above patent document, the parallel motors are arranged on the same roller shaft. When one of the motors loses power, the other motors can still drive the entire roller shaft to rotate, and the conveyor belt can also operate. The torque of the motor that continues to operate will increase rapidly, resulting in excessive load and current of the operating motor, which will cause the motor that can operate normally to burn out. In addition, the motors are arranged on the same roller shaft, which will cause inconvenience in maintenance. Utility Model Content

[0005] The utility model aims to provide a dual-drive electric roller, which solves the problem that the motors in the existing electric roller are arranged on the same roller shaft, which is not only inconvenient to maintain, but also causes excessive load on other motors when one set of motors loses power.

[0006] To achieve the above-mentioned purpose, an embodiment of the utility model provides a dual-drive electric roller, comprising two sets of electric mechanisms and a connecting shaft, wherein the two electric mechanisms are symmetrically arranged, and the connecting shaft connects the two electric mechanisms;

[0007] The electric mechanism includes a support shaft, a connecting piece, a reduction motor, a first rotating sleeve, a second rotating sleeve, a roller and a rolling bearing; the support shaft can rotatably pass through the first rotating sleeve, one end of the support shaft is fixedly connected to the connecting piece, and the other end is a supporting end for being supported on a mounting frame; one end of the reduction motor is connected to the connecting piece, and the other end is provided with an output shaft, and the second rotating sleeve is arranged on the output shaft; one end of the roller is sleeved on the first rotating sleeve, and the other end is sleeved on the second rotating sleeve; the rolling bearing is arranged at one end of the roller close to the second rotating sleeve, and the connecting shaft connects the rolling bearings of the two electric mechanisms.

[0008] Furthermore, a limiting convex ring is provided at a supporting end of the first rotating sleeve closer to the supporting shaft; and the end of the roller is limited by the end surface of the limiting convex ring.

[0009] Furthermore, the connecting member includes a connecting flange, a connecting sleeve and an electrical connecting member; the connecting flange is sleeved on the supporting shaft, the connecting sleeve is sleeved on the connecting flange, the electrical connecting member is arranged in the connecting sleeve, and the reduction motor is connected to the connecting sleeve.

[0010] Furthermore, the connecting flange includes a first rigid flange and a first rubber flange, the first rigid flange is sleeved on the support shaft, and the first rubber flange is wrapped around the outside of the first rigid flange; a plurality of first bosses are provided on the outside of the rubber flange, and the first rigid flange is provided with a first supporting portion extending into the corresponding first boss; a first groove is provided in the connecting sleeve to cooperate with the first boss.

[0011] Furthermore, a shell is sleeved on the outer side of the reduction motor, and one end of the shell is sleeved on the outer side of the connecting sleeve; the rotating shaft of the reduction motor extends into and is rotatably supported in the connecting sleeve.

[0012] Further, the reduction motor includes a motor and a reduction box; the reduction box includes a cylinder, a first sun gear, a first planetary gear, a rotating disk, a second sun gear, a second planetary gear, an output shaft and an output flange; the cylinder is arranged at one end of the motor; the first end cover and the second end cover are respectively arranged at both ends of the cylinder, the rotating shaft of the motor can rotatably pass through the first end cover and extend into the cylinder, the first sun gear is arranged on the rotating shaft of the motor, the inner side of the cylinder is provided with an internal gear, and the gear teeth of the internal gear extend to both ends of the cylinder; the output shaft rotatably passes through the second end cover, the end of the output shaft extending into the cylinder is provided with a connecting disk, the end of the connecting disk is rotatably connected with a plurality of the second planetary gears, and each of the second planetary gears is meshed with the internal gear; the second sun gear is meshed between each of the second planetary gears, and one end of the sun gear is fixedly connected to the rotating disk; the plurality of the first planetary gears are arranged at one end of the rotating disk, and meshed with the first sun gear and the internal gear; the output flange is sleeved on the end of the output shaft extending from the cylinder; the second rotating sleeve is connected to the output flange.

[0013] Furthermore, the output flange includes a second rigid flange and a second rubber flange; the second rigid flange is sleeved on the output shaft, the second rubber flange wraps the outer side of the second rigid flange, a plurality of second bosses are provided on the outer side of the second rubber flange, and the second rigid flange is provided with a second supporting portion extending into the corresponding second bosses; a step hole is provided at one end of the second rotating sleeve, the step hole is sleeved on the outer side of the output flange; a second groove matching the second boss is provided in the step hole.

[0014] Furthermore, one end of the support shaft extending out of the drum is provided with a thread.

[0015] Furthermore, the fixed axis of the electrical connector is a hollow structure.

[0016] The above one or more technical solutions in the dual-drive electric roller provided by the embodiment of the utility model have at least the following technical effects: the dual-drive electric roller is a roller bearing in two independent electric mechanisms connected by a connecting shaft, so that the two groups of electric mechanisms are connected in series and support each other; and the two groups of electric mechanisms can be independent and can realize synchronous operation without interference with each other. When the two groups of electric mechanisms are connected to the same conveyor belt and operate synchronously in the same direction, the torque of the roller can be increased and the transportation efficiency can be improved. When the two groups of electric mechanisms are connected to the two conveyor belts separately, the two conveyor belts can be transmitted in the same direction or in the opposite direction in a limited space, reducing the space occupied by the logistics line. Therefore, after the reduction motor of one group of electric mechanisms loses power, the electric mechanism of this group will stop running, and under the drive of the other group of electric mechanisms, the conveyor belts set on the two electric mechanisms will be offset, so it can be well found that one group of electric mechanisms has a fault, and it can be handled in time to avoid the problem of damage to the normally operating electric mechanism due to overload. In addition, during maintenance, only one group needs to be replaced, and maintenance and replacement are simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 A three-dimensional schematic diagram of a dual-drive electric drum provided in an embodiment of the utility model.

[0019] Figure 2 This is a front view of a dual-drive electric drum provided in an embodiment of the utility model.

[0020] Figure 3 The double-drive electric roller provided by the embodiment of the utility model Figure 2 Cross-sectional structure diagram along the AA surface.

[0021] Figure 4 A structural diagram of a connecting piece of a dual-drive electric roller provided in an embodiment of the utility model.

[0022] Figure 5 A structural diagram of the connecting flange of the dual-drive electric drum provided in an embodiment of the utility model.

[0023] Figure 6 The double-drive electric roller provided by the embodiment of the utility model Figure 5 Cross-section along plane BB.

[0024] Figure 7 A cross-sectional view of a reduction motor for a dual-drive electric drum provided in an embodiment of the utility model.

[0025] Figure 8 A structural diagram of the assembly of the second rotating sleeve and the output flange of the dual-drive electric drum provided in an embodiment of the utility model.

[0026] Fig. 9 A cross-sectional view of the output flange of a dual-drive electric drum provided in an embodiment of the utility model.

[0027] Fig.10 This is a structural diagram of the second rotating sleeve of the dual-drive electric drum provided in an embodiment of the utility model.

[0028] In the figure: 100, support shaft;

[0029] 200, connecting piece, 210, connecting flange, 211, first rigid flange, 212, first rubber flange, 213, first boss, 214, first supporting portion, 220, connecting sleeve, 221, first groove, 230, electrical connecting piece, 231, fixed shaft;

[0030] 300, reduction motor, 310, motor, 311, rotating shaft, 320, reduction box, 321, cylinder, 322, first end cover, 323, second end cover, 324, first sun gear, 325, first planetary gear, 326, rotating disk, 327, second sun gear, 328, second planetary gear, 329, connecting disk, 330, output shaft, 340, housing, 350, output flange, 351, second rigid flange, 352, second rubber flange, 353, second boss, 354, second supporting portion;

[0031] 400, first rotating sleeve, 410, limiting convex ring;

[0032] 500, second rotating sleeve, 510, step hole, 520, second groove;

[0033] 600, roller;

[0034] 700, rolling bearings;

[0035] 800. Connecting shaft. DETAILED DESCRIPTION

[0036] 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 intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0037] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention 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 invention.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0039] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0040] In one embodiment of the dual-drive electric roller of the utility model, please refer to Figures 1 to 10 The double-drive electric drum comprises two sets of electric mechanisms and a connecting shaft 800 . The two electric mechanisms are symmetrically arranged, and the connecting shaft 800 connects the two electric mechanisms.

[0041] The electric mechanism includes a support shaft 100, a connector 200, a reduction motor 300, a first rotating sleeve 400, a second rotating sleeve 500, a roller 600 and a rolling bearing 700. The support shaft 100 can rotatably pass through the first rotating sleeve 400, one end of the support shaft 100 is fixedly connected to the connector 200, and the other end is a support end for supporting on a mounting frame. One end of the reduction motor 300 is connected to the connector 200, and the other end is provided with an output shaft, and the second rotating sleeve 500 is arranged on the output shaft 330. One end of the roller 600 is sleeved on the first rotating sleeve 400, and the other end is sleeved on the second rotating sleeve 500; the rolling bearing 700 is arranged at one end of the roller 600 close to the second rotating sleeve 500, and the connecting shaft 800 connects the rolling bearings 700 of the two electric mechanisms. Specifically, the rolling bearings 700 in the two independent electric mechanisms are connected by a connecting shaft 800, so that the two groups of electric mechanisms are connected in series and support each other; and the two groups of electric mechanisms can be independent and can realize synchronous operation without interfering with each other. When the two groups of electric mechanisms are connected to the same conveyor belt and operate synchronously in the same direction, the torque of the roller can be increased and the transportation efficiency can be improved. When the two groups of electric mechanisms are connected to the two conveyor belts separately, the two conveyor belts can be transmitted in the same direction or reversely in a limited space, reducing the space occupied by the logistics line. After the reduction motor 300 of one group of electric mechanisms loses power, the electric mechanism of this group will stop running, and under the drive of the other group of electric mechanisms, the conveyor belts set on the two electric mechanisms will be offset. Therefore, it is possible to find that one of the electric mechanisms has a fault, which can be handled in time to avoid the problem of damage to the normally operating electric mechanism due to overload. In addition, during maintenance, only one group needs to be replaced, and maintenance and replacement are simple and convenient.

[0042] Further, refer to Figure 1 , the first rotating sleeve 400 is further provided with a limiting convex ring 410 at the supporting end closer to the supporting shaft 100; the end of the roller 600 is limited at the end surface of the limiting convex ring 410. Specifically, since the first rotating sleeve 400 is provided with the limiting convex ring 410, the end of the roller 600 is limited at the end surface of the limiting convex ring 410, so as to prevent the roller 600 from moving under the drive of the reduction motor.

[0043] Further, refer to Figure 4, the connecting member 200 includes a connecting flange 210, a connecting sleeve 220 and an electric connecting member 230; the connecting flange 210 is sleeved on the supporting shaft 100, the connecting sleeve 220 is sleeved on the connecting flange 210, the electric connecting member 230 is arranged in the connecting sleeve 220, and the reduction motor 300 is connected to the connecting sleeve 220. Specifically, since the electric connecting member 230 is arranged in the connecting sleeve 220, and the reduction motor 300 is connected to the connecting sleeve 220, the electric connecting member 230 can be connected to the reduction motor 300 to provide power for the reduction motor 300. And the connecting flange 210 is sleeved on the supporting shaft 100, and the connecting sleeve 220 is sleeved on the connecting flange 210. When the electric drum is installed on the mounting frame, the supporting shaft 100 can be fixedly supported on the mounting seat, which can support the connecting flange 210 and the connecting sleeve 220, and ensure that the electric connecting member 230 and the motor 310 can work normally in the connecting sleeve 220.

[0044] Further, refer to Figure 4 , Figure 5 and Figure 6 The connecting flange 210 includes a first rigid flange 211 and a first rubber flange 212. The first rigid flange 211 is sleeved on the support shaft 100, and the first rubber flange 212 is wrapped around the outside of the first rigid flange 211. A plurality of first bosses 213 are provided on the outside of the rubber flange 212, and the first rigid flange 211 is provided with a first support portion 214 extending into the corresponding first bosses 213. A first groove 221 is provided in the connecting sleeve 220 to cooperate with the first boss 213. Specifically, the first rigid flange 211 is provided to be sleeved on the support shaft 100, and the support shaft 100 can provide a good supporting force for the connecting member 200. The first rubber flange 212 is provided on the outside of the first rigid flange 211 and the inside of the connecting sleeve 220, and can provide elastic buffering force during the conveying of items by the conveyor belt connected to the electric roller, so as to avoid the problem of the electric roller being subjected to pressure and wear and causing failure when the items are overloaded or transported at one end of the electric roller. A first supporting portion 214 , a first boss 213 , and a first groove 221 are provided at the connection of the flanges in order to increase the contact area and the limit between the flanges and ensure the stability of the connecting member 200 .

[0045] Furthermore, refer to Figure 3, the outer side of the reduction motor 300 is sleeved with a housing 340, one end of the housing 340 is sleeved on the outer side of the connecting sleeve 220; the rotating shaft 311 of the reduction motor 300 extends into and is rotatably supported in the connecting sleeve 220. Specifically, by providing the housing 340, the housing 340 is sleeved on the outer side of the reduction motor 30 and the outer side of the connecting sleeve 220, the rotating shaft 311 of the reduction motor 300 is rotatably supported in the connecting sleeve 220, the rotating shaft 311 of the reduction motor 300 is fixed in the connecting sleeve 220 for rotational movement, the outer side of the reduction motor 300 is fixed in the housing 340, and the support shaft 100 provides support force for the housing 340 and the reduction motor 300 through the connecting sleeve 220, and the housing 340 also provides protection for the reduction motor 300.

[0046] Further, refer to Figure 7 The reduction motor 300 includes a motor 310 and a reduction box 320; the reduction box 320 includes a cylinder 321, a first sun gear 324, a first planetary gear 325, a rotating disk 326, a second sun gear 327, a second planetary gear 328, an output shaft 330 and an output flange 350; the cylinder 321 is arranged at one end of the motor 310; the two ends of the cylinder 321 are respectively provided with a first end cover 322 and a second end cover 323, the rotating shaft 311 of the motor can rotatably pass through the first end cover 322 and extend into the cylinder 321, the first sun gear 324 is arranged on the rotating shaft 311 of the motor, and an internal gear is arranged on the inner side of the cylinder 321, and the gear teeth of the internal gear extend to the cylinder 321 Two ends; the output shaft 330 rotatably passes through the second end cover 323, and the end of the output shaft 330 extending into the cylinder 321 is provided with a connecting disk 329, and the end of the connecting disk 329 is rotatably connected to a plurality of second planetary gears 328, and each second planetary gear 328 is meshed with an internal gear; the second sun gear 327 is meshed between the second planetary gears 328, and one end of the second sun gear 327 is fixedly connected to the turntable 326; a plurality of first planetary gears 325 are provided at one end of the turntable 326, and are meshed with the first sun gear 324 and the internal gear; the output flange 350 is sleeved on the end of the output shaft 330 extending out of the cylinder 321; the second rotating sleeve 500 is connected to the output flange 350. In this embodiment, the first end cover 322 and the second end cover 323 are respectively provided at both ends of the cylinder 321, so as to ensure that the connecting sleeve 220 and the first sun gear 324 connected at both ends of the rotating shaft 311 are kept on the same axis; the output end 330 is rotatably connected to the output flange 350 through the second end cover 323, so as to ensure that the axis of the output shaft 330 is on the same straight line as the axis of the rotating shaft 311. By providing a planetary structure of two sun gears, the rotation speed of the rotating shaft 311 can be reduced, the output torque of the output shaft 330 can be increased, and the rotation stability can be improved.

[0047] Further, refer to Figures 8 to 10The output flange 350 includes a second rigid flange 351 and a second rubber flange 352; the second rigid flange 351 is sleeved on the output shaft 330, the second rubber flange 352 wraps the outer side of the second rigid flange 351, a plurality of second bosses 353 are arranged on the outer side of the second rubber flange 352, and the second rigid flange 351 is provided with a second support portion 354 extending into the corresponding second bosses 353; one end of the second rotating sleeve 500 is provided with a step hole 510, the step hole 510 is sleeved on the outer side of the output flange 350; the step hole 510 is provided with a second groove 520 matched with the second boss 353. Specifically, the output flange 350 is sleeved on the output shaft 330, so the output shaft 330 can provide power for the output flange 350, and then provide rotation power for the second rotating sleeve 500 and the drum 600 connected thereto. Because the second rubber flange 352 is arranged on the outside of the second rigid flange 351 and the inside of the second rotating sleeve 500, it can provide elastic buffering force together with the connecting piece 200 during the process of conveying items on the conveyor belt connected to the electric roller, so as to avoid the problem that the electric roller is subjected to pressure and wear and malfunction when the items are overloaded or transported at one end of the electric roller. The second rotating sleeve 500, the second rigid flange 351, and the second rubber flange 352 are respectively provided with a second groove 520, a second support portion 354, and a second boss 353, in order to increase the contact area between the parts, ensure that they are closely connected to each other, and ensure that the power of the output end 330 is greatly converted to the roller 600 for rotational motion through the second rotating sleeve 500.

[0048] Further, refer to Figure 1 , one end of the support shaft 100 extending out of the drum 600 is provided with a thread. Specifically, the support shaft 100 can be connected and fixed to the mounting frame through the thread.

[0049] Further, refer to Figure 3 The fixed shaft 231 of the electrical connector is a hollow structure. Specifically, the fixed shaft 231 is hollow and can be inserted with wires to connect with the electrical connector 230 and the reduction motor 300 to provide power for them.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dual-drive electric drum, characterized in that: It comprises two sets of electric mechanisms and a connecting shaft, the two electric mechanisms are symmetrically arranged, and the connecting shaft connects the two electric mechanisms; The electric mechanism includes a support shaft, a connecting piece, a reduction motor, a first rotating sleeve, a second rotating sleeve, a roller and a rolling bearing; the support shaft can rotatably pass through the first rotating sleeve, one end of the support shaft is fixedly connected to the connecting piece, and the other end is a supporting end for being supported on a mounting frame; one end of the reduction motor is connected to the connecting piece, and the other end is provided with an output shaft, and the second rotating sleeve is arranged on the output shaft; one end of the roller is sleeved on the first rotating sleeve, and the other end is sleeved on the second rotating sleeve; the rolling bearing is arranged at one end of the roller close to the second rotating sleeve, and the connecting shaft connects the rolling bearings of the two electric mechanisms.

2. The dual-drive electric drum according to claim 1, characterized in that: A limiting convex ring is further provided on the supporting end of the first rotating sleeve closer to the supporting shaft; the end of the roller is limited by the end surface of the limiting convex ring.

3. The dual-drive electric drum according to claim 1, characterized in that: The connecting piece includes a connecting flange, a connecting sleeve and an electrical connecting piece; the connecting flange is sleeved on the supporting shaft, the connecting sleeve is sleeved on the connecting flange, the electrical connecting piece is arranged in the connecting sleeve, and the reduction motor is connected to the connecting sleeve.

4. The dual-drive electric drum according to claim 3, characterized in that: The connecting flange includes a first rigid flange and a first rubber flange, the first rigid flange is sleeved on the supporting shaft, and the first rubber flange is wrapped around the outer side of the first rigid flange; a plurality of first bosses are provided on the outer side of the rubber flange, and the first rigid flange is provided with a first supporting portion extending into the corresponding first boss; a first groove is provided in the connecting sleeve and is matched with the first boss.

5. The dual-drive electric drum according to claim 4, characterized in that: The outer side of the reduction motor is sleeved with a shell, and one end of the shell is sleeved on the outer side of the connecting sleeve; the rotating shaft of the reduction motor extends into and is rotatably supported in the connecting sleeve.

6. The dual-drive electric drum according to any one of claims 1 to 5, characterized in that: The reduction motor comprises a motor and a reduction box; the reduction box comprises a cylinder, a first sun gear, a first planetary gear, a rotating disk, a second sun gear, a second planetary gear, an output shaft and an output flange; the cylinder is arranged at one end of the motor; the first end cover and the second end cover are respectively arranged at both ends of the cylinder, the rotating shaft of the motor can rotatably pass through the first end cover and extend into the cylinder, the first sun gear is arranged on the rotating shaft of the motor, the inner side of the cylinder is provided with an internal gear, and the gear teeth of the internal gear extend to both ends of the cylinder; the output shaft rotatably passes through the second end cover, the end of the output shaft extending into the cylinder is provided with a connecting disk, the end of the connecting disk is rotatably connected with a plurality of the second planetary gears, and each of the second planetary gears is meshed with the internal gear; the second sun gear is meshed between each of the second planetary gears, and one end of the sun gear is fixedly connected to the rotating disk; the plurality of the first planetary gears are arranged at one end of the rotating disk, and meshed with the first sun gear and the internal gear; the output flange is sleeved on the end of the output shaft extending out of the cylinder; the second rotating sleeve is connected to the output flange.

7. The dual-drive electric drum according to claim 6, characterized in that: The output flange includes a second rigid flange and a second rubber flange; the second rigid flange is sleeved on the output shaft, the second rubber flange wraps the outer side of the second rigid flange, a plurality of second bosses are provided on the outer side of the second rubber flange, and the second rigid flange is provided with a second supporting portion extending into the corresponding second bosses; a step hole is provided at one end of the second rotating sleeve, the step hole is sleeved on the outer side of the output flange; a second groove matching the second boss is provided in the step hole.

8. The dual-drive electric drum according to any one of claims 1 to 5, characterized in that: One end of the support shaft extending out of the drum is provided with a thread.

9. The dual-drive electric drum according to any one of claims 3 to 5, characterized in that: The fixed shaft of the electrical connector is a hollow structure.

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