Driving device

Abstract

According to the driving device, a first reduction gear set is arranged in a first containing cavity of a first sleeve, a motor is arranged in a second containing cavity of a second sleeve, and the edge of a cavity opening of the first containing cavity is welded to one end of a connecting piece; the edge of a cavity opening of the second containing cavity is welded to the other end of the connecting piece, so that the sealing performance between the connecting piece and the edge of the cavity opening of the first containing cavity is better, the sealing performance between the connecting piece and the edge of the cavity opening of the second containing cavity is better, and the influence of external factors on the motor and the first reduction gear set is reduced; and the service lives of the motor and the first reduction gear set are prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to drive structure technical field, especially drive device. BACKGROUND

[0002] In the mechanical manufacturing process, motor is a common driver, although the output end of motor has higher rotating speed, but the torque of the output end of motor is lower, if directly connecting the output end of motor with processing equipment, since the torque of the output end of motor is lower, motor is difficult to drive processing equipment to work normally.

[0003] In the related art, the motor is transmissionally connected with the input end of the reduction gear set, under the action of the reduction gear set, the output end of the reduction gear set has smaller rotating speed and larger torque relative to the output end of the motor, so that the output end of the reduction gear set can have sufficient torque to drive the processing equipment to work.

[0004] In order to facilitate the connection between the motor and the reduction gear set, the motor is usually installed in the first sleeve, the reduction gear set is installed in the second sleeve, and the first sleeve and the second sleeve are fixed on the connecting piece through the threaded connecting piece; although the threaded connecting piece can realize the installation of the first sleeve and the second sleeve on the connecting piece respectively, the sealing performance of the first sleeve and the second sleeve is poor, which affects the service life of the motor and the reduction gear set. UTILITY MODEL CONTENTS

[0005] The utility model discloses a drive device, and the motor and the reduction gear set have longer service life in the drive device of the embodiment.

[0006] According to the drive device provided by the utility model embodiment, the connecting piece is provided with a through hole, the reduction assembly includes a first reduction gear set and a first sleeve, the first sleeve is provided with a first accommodating cavity, the cavity opening edge of the first accommodating cavity is welded with one end of the connecting piece, the first accommodating cavity is communicated with one end of the through hole, and the first reduction gear set is arranged in the first accommodating cavity, the drive assembly includes a motor and a second sleeve, the second sleeve is provided with a second accommodating cavity, the cavity opening edge of the second accommodating cavity is welded with the other end of the connecting piece, the second accommodating cavity is communicated with the other end of the through hole, the motor is arranged in the second accommodating cavity, the output end of the motor penetrates through the through hole and is transmissionally connected with the input end of the first reduction gear set.

[0007] The driving device has at least the following beneficial effects: in the driving device, the first reduction gear set is arranged in the first accommodating cavity of the first sleeve, and the motor is arranged in the second accommodating cavity of the second sleeve, the cavity opening edge of the first accommodating cavity is welded to one end of the connecting piece, the cavity opening edge of the second accommodating cavity is welded to the other end of the connecting piece, the sealing performance between the connecting piece and the cavity opening edge of the first accommodating cavity is better, the sealing performance between the connecting piece and the cavity opening edge of the second accommodating cavity is also better, the influence of external factors on the motor and the first reduction gear set is reduced, and the service life of the motor and the first reduction gear set is prolonged.

[0008] The driving device has at least the following beneficial effects: in the driving device, the first reduction gear set is arranged in the first accommodating cavity of the first sleeve, and the motor is arranged in the second accommodating cavity of the second sleeve, the cavity opening edge of the first accommodating cavity is welded to one end of the connecting piece, the cavity opening edge of the second accommodating cavity is welded to the other end of the connecting piece, the sealing performance between the connecting piece and the cavity opening edge of the first accommodating cavity is better, the sealing performance between the connecting piece and the cavity opening edge of the second accommodating cavity is also better, the influence of external factors on the motor and the first reduction gear set is reduced, and the service life of the motor and the first reduction gear set is prolonged.

[0009] The driving device has at least the following beneficial effects: in the driving device, the first reduction gear set is arranged in the first accommodating cavity of the first sleeve, and the motor is arranged in the second accommodating cavity of the second sleeve, the cavity opening edge of the first accommodating cavity is welded to one end of the connecting piece, the cavity opening edge of the second accommodating cavity is welded to the other end of the connecting piece, the sealing performance between the connecting piece and the cavity opening edge of the first accommodating cavity is better, the sealing performance between the connecting piece and the cavity opening edge of the second accommodating cavity is also better, the influence of external factors on the motor and the first reduction gear set is reduced, and the service life of the motor and the first reduction gear set is prolonged.

[0010] The driving device has at least the following beneficial effects: in the driving device, the first reduction gear set is arranged in the first accommodating cavity of the first sleeve, and the motor is arranged in the second accommodating cavity of the second sleeve, the cavity opening edge of the first accommodating cavity is welded to one end of the connecting piece, the cavity opening edge of the second accommodating cavity is welded to the other end of the connecting piece, the sealing performance between the connecting piece and the cavity opening edge of the first accommodating cavity is better, the sealing performance between the connecting piece and the cavity opening edge of the second accommodating cavity is also better, the influence of external factors on the motor and the first reduction gear set is reduced, and the service life of the motor and the first reduction gear set is prolonged.

[0011] The driving device has at least the following beneficial effects: in the driving device, the first reduction gear set is arranged in the first accommodating cavity of the first sleeve, and the motor is arranged in the second accommodating cavity of the second sleeve, the cavity opening edge of the first accommodating cavity is welded to one end of the connecting piece, the cavity opening edge of the second accommodating cavity is welded to the other end of the connecting piece, the sealing performance between the connecting piece and the cavity opening edge of the first accommodating cavity is better, the sealing performance between the connecting piece and the cavity opening edge of the second accommodating cavity is also better, the influence of external factors on the motor and the first reduction gear set is reduced, and the service life of the motor and the first reduction gear set is prolonged.

[0012] The driving device has at least the following beneficial effects: in the driving device, the first reduction gear set is arranged in the first accommodating cavity of the first sleeve, and the motor is arranged in the second accommodating cavity of the second sleeve, the cavity opening edge of the first accommodating cavity is welded to one end of the connecting piece, the cavity opening edge of the second accommodating cavity is welded to the other end of the connecting piece, the sealing performance between the connecting piece and the cavity opening edge of the first accommodating cavity is better, the sealing performance between the connecting piece and the cavity opening edge of the second accommodating cavity is also better, the influence of external factors on the motor and the first reduction gear set is reduced, and the service life of the motor and the first reduction gear set is prolonged.

[0013] The driving device has at least the following beneficial effects: in the driving device, the first reduction gear set is arranged in the first accommodating cavity of the first sleeve, and the motor is arranged in the second accommodating cavity of the second sleeve, the cavity opening edge of the first accommodating cavity is welded to one end of the connecting piece, the cavity opening edge of the second accommodating cavity is welded to the other end of the connecting piece, the sealing performance between the connecting piece and the cavity opening edge of the first accommodating cavity is better, the sealing performance between the connecting piece and the cavity opening edge of the second accommodating cavity is also better, the influence of external factors on the motor and the first reduction gear set is reduced, and the service life of the motor and the first reduction gear set is prolonged.

[0014] The driving device has at least the following beneficial effects: in the driving device, the first reduction gear set is arranged in the first accommodating cavity of the first sleeve, and the motor is arranged in the second accommodating cavity of the second sleeve, the cavity opening edge of the first accommodating cavity is welded to one end of the connecting piece, the cavity opening edge of the second accommodating cavity is welded to the other end of the connecting piece, the sealing performance between the connecting piece and the cavity opening edge of the first accommodating cavity is better, the sealing performance between the connecting piece and the cavity opening edge of the second accommodating cavity is also better, the influence of external factors on the motor and the first reduction gear set is reduced, and the service life of the motor and the first reduction gear set is prolonged.

[0015] The driving device has at least the following beneficial effects: in the driving device, the first reduction gear set is arranged in the first accommodating cavity of the first sleeve, and the motor is arranged in the second accommodating cavity of the second sleeve, the cavity opening edge of the first accommodating cavity is welded to one end of the connecting piece, the cavity opening edge of the second accommodating cavity is welded to the other end of the connecting piece, the sealing performance between the connecting piece and the cavity opening edge of the first accommodating cavity is better, the sealing performance between the connecting piece and the cavity opening edge of the second accommodating cavity is also better, the influence of external factors on the motor and the first reduction gear set is reduced, and the service life of the motor and the first reduction gear set is prolonged.

[0016] The driving device according to an embodiment of the utility model, second reduction gear group includes second planet carrier and second planetary gear, be equipped with second planetary gear shaft and second sun gear shaft on second planet carrier, second planetary gear is equipped with on second planetary gear shaft, and with internal tooth surface is engaged, first sun gear shaft is engaged with second planetary gear.

[0017] Additional aspects and advantages of the utility model will be in part given in the following description, part will become obvious from the following description, or be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model is further explained below in combination with drawings and examples;

[0019] Figure 1 It is the structure schematic drawing of driving device for one embodiment of the utility model;

[0020] Figure 2 It is the explosion drawing of driving device shown in figure 1; Figure 1

[0021] It is the structure schematic drawing of connecting piece of driving device shown in figure 2; Figure 3 Figure 2 It is the structure schematic drawing of another view of connecting piece shown in figure 3;

[0022] Figure 4 Figure 3 It is the structure schematic drawing of first reduction gear group of driving device shown in figure 4;

[0023] Figure 5 It is the structure schematic drawing of first planet carrier of first reduction gear group shown in figure 5. Figure 2

[0024] Figure 6 It is the structure schematic drawing of first planet carrier of first reduction gear group shown in figure 5. Figure 5 REFERENCE SIGNS:

[0025] Connecting piece 100, interpenetration hole 110, connecting protrusion 120, connecting groove 130;

[0026] Reduction assembly 200, first reduction gear group 210, first planet carrier 211, first planetary gear shaft 211a, first sun gear shaft 211b, first planetary gear 212, first limit plate 213, connecting column 213a, first sleeve 220, first containing cavity 221, internal tooth surface 222, annular groove 223, second reduction gear group 230;

[0027] Driving assembly 300, motor 310, second sleeve 320.

[0028] DETAILED DESCRIPTION

[0029] ​​​​This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0030] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0031] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0033] Reference below Figures 1 to 6 The driving device of the present application is described in detail.

[0034] refer to Figure 1 and Figure 2 , According to the driving device of the embodiment of the present utility model, it includes a connecting member 100, a reduction assembly 200 and a driving assembly 300; the connecting member 100 is provided with an insertion hole 110; the reduction assembly 200 includes a first reduction gear group 210 and a first sleeve 220, the first sleeve 220 is provided with a first accommodating cavity 221, the cavity edge of the first accommodating cavity 221 is welded to one end of the connecting member 100, and the first accommodating cavity 221 is connected to one end of the insertion hole 110, and the first reduction gear group 210 is arranged in the first accommodating cavity 221; the driving assembly 300 includes a motor 310 and a second sleeve 320, the second sleeve 320 is provided with a second accommodating cavity, the cavity edge of the second accommodating cavity is welded to the other end of the connecting member 100, and the second accommodating cavity is connected to the other end of the insertion hole 110, the motor 310 is arranged in the second accommodating cavity, the output end of the motor 310 passes through the insertion hole 110 and is transmission-connected to the input end of the first reduction gear group 210.

[0035] For example, as shown in Figure 1 and Figure 2 The driving device comprises a connecting piece 100, a speed reduction assembly 200 and a driving assembly 300, the connecting piece 100 is provided with a left-right extending through hole 110, the speed reduction assembly 200 comprises a first speed reduction gear set 210 and a first sleeve 220, the first sleeve 220 is internally provided with a first accommodating cavity 221, the left end of the first accommodating cavity 221 is provided with a cavity opening communicating with the outside, the first speed reduction gear set 210 is arranged in the first accommodating cavity 221, the driving assembly 300 comprises a motor 310 and a second sleeve 320, the second sleeve 320 is internally provided with a second accommodating cavity, the right end of the second accommodating cavity is provided with a cavity opening communicating with the outside, the motor 310 is arranged in the second accommodating cavity, the cavity opening edge of the first accommodating cavity 221 is welded with the right end of the connecting piece 100, and the right end of the through hole 110 is communicated with the first accommodating cavity 221, the cavity opening edge of the second accommodating cavity is welded with the left end of the connecting piece 100, and the left end of the through hole 110 is communicated with the second accommodating cavity, the output end of the motor 310 extends into the first accommodating cavity 221 through the through hole 110, and the output end of the motor 310 is communicated with the input end of the first speed reduction gear set 210.

[0036] Further, the output end of the first speed reduction gear set 210 is drivingly connected with the input end of the processing equipment, under the driving of the motor 310, the output end of the first speed reduction gear set 210 can drive the processing equipment to work, since the rotating speed of the output end of the first speed reduction gear set 210 is lower than that of the output end of the motor 310, under the premise that the output power of the motor 310 is constant, the output end of the first speed reduction gear set 210 has greater torque, thereby the driving device of the application can more smoothly drive the processing equipment to work.

[0037] It can be understood that, since the cavity opening edge of the first accommodating cavity 221 is welded with one end of the connecting piece 100, and the cavity opening edge of the second accommodating cavity is welded with the other end of the connecting piece 100, the sealing effect of the junction of the first sleeve 220 and the connecting piece 100 is better, and the sealing effect of the junction of the second sleeve 320 and the connecting piece 100 is better, in the working process of the driving device of the application, the driving assembly 300 and the speed reduction assembly 200 are less affected by the external environment, thereby prolonging the service life of the driving assembly 300 and the speed reduction assembly 200.

[0038] It can be understood that, since the cavity opening edge of the first accommodating cavity 221 is welded with one end of the connecting piece 100, and the cavity opening edge of the second accommodating cavity is welded with the other end of the connecting piece 100, the first sleeve 220 and the connecting piece 100 are not connected by screws, and the second sleeve 320 and the connecting piece 100 are not connected by screws, so that the screwing process in the manufacturing process of the driving device of the application can be reduced.

[0039] In some embodiments of the utility model, the connecting piece 100 is provided with a connecting protrusion 120, the connecting protrusion 120 is arranged in the first accommodating cavity 221, and the cavity wall of the first accommodating cavity 221 is welded.

[0040] For example, as shown in Figure 2 and Figure 3 , the right end of the connecting piece 100 is provided with an annular connecting protrusion 120, the connecting protrusion 120 is arranged around the penetrating hole 110, the connecting protrusion 120 is arranged in the first accommodating cavity 221, and the cavity wall of the first accommodating cavity 221 is welded.

[0041] It can be understood that, by arranging the connecting protrusion 120 on the connecting piece 100, when welding the connecting piece 100 and the first sleeve 220, the connecting protrusion 120 can be arranged in the first accommodating cavity 221, so as to realize the clamping connection between the connecting piece 100 and the first sleeve 220, then the ultrasonic welding equipment can be used to realize the welding between the connecting piece 100 and the first sleeve 220, so that the connecting protrusion 120 is welded with the cavity wall of the first accommodating cavity 221.

[0042] In further embodiments of the utility model, referring to Figure 2 , the left cavity opening of the first accommodating cavity 221 is provided with an annular groove, the connecting protrusion 120 is arranged in the annular groove, and the peripheral wall and the right end wall of the connecting protrusion 120 are welded with the groove wall of the annular groove.

[0043] It can be understood that, by arranging the annular groove and arranging the connecting protrusion 120 in the annular groove, the sealing performance of the connection between the connecting piece 100 and the first sleeve 220 can be better.

[0044] In some embodiments of the utility model, the connecting piece 100 is provided with a connecting groove 130, the cavity opening edge of the second accommodating cavity is arranged in the connecting groove 130, and the groove wall of the connecting groove 130 is welded.

[0045] For example, as shown in Figure 4As shown, the left end of the connecting piece 100 is provided with a connecting groove 130, the penetrating hole 110 is arranged in the connecting groove 130, the left end of the second sleeve 320 is arranged in the connecting groove 130, so that the cavity opening edge of the second accommodating cavity is arranged in the connecting groove 130, the right end wall of the second sleeve 320 is welded with the groove bottom wall of the connecting groove 130, and the peripheral wall of the second sleeve 320 is welded with the side groove wall of the connecting groove 130.

[0046] It can be understood that, by arranging the connecting groove 130 on the connecting piece 100, when welding between the connecting piece 100 and the second sleeve 320 is realized, the worker can arrange the second sleeve 320 in the connecting groove 130, so that clamping between the connecting piece 100 and the second sleeve 320 is realized, and then the worker can realize welding between the connecting piece 100 and the second sleeve 320 by using the ultrasonic welding equipment.

[0047] In some embodiments of the utility model, refer to Figure 2 、 Figure 5 and Figure 6 , the cavity wall of the first accommodating cavity 221 is provided with an inner tooth surface 222, the first reduction gear set 210 includes a first planet carrier 211 and a first planet gear 212, the first planet carrier 211 is provided with a first planet wheel shaft 211a and a first sun wheel shaft 211b, the first planet gear 212 is arranged on the first planet wheel shaft 211a and is engaged with the inner tooth surface 222, and the output end of the motor 310 is engaged with the first planet gear 212.

[0048] It can be understood that, under the driving of the motor 310, the output end of the motor 310 can drive the first planet gear 212 to rotate, since the first planet gear 212 is engaged with the inner tooth surface 222 of the first accommodating cavity 221, in the process of autorotation of the first planet gear 212, the first planet gear 212 can revolve around the axis of the first sleeve 220 along the inner tooth surface 222, so as to drive the first planet carrier 211 and the first sun wheel shaft 211b to autorotate.

[0049] In some embodiments of the utility model, the first planet carrier 211 is provided with a plurality of first planet wheel shafts 211a, and the plurality of first planet wheel shafts 211a are distributed in the circumferential direction around the axis of the first sun wheel shaft 211b, and one first planet gear 212 is arranged on each first planet wheel shaft 211a.

[0050] For example, as shown in Figure 5 and Figure 6 , the first planet carrier 211 is provided with three first planet wheel shafts 211a, one first planet gear 212 is arranged on each first planet wheel shaft 211a, and the three first planet wheel shafts 211a are distributed in the circumferential direction around the axis of the first sun wheel shaft 211b.

[0051] It can be understood that by arranging the plurality of first planetary gears 212 on the first planet carrier 211 and distributing the plurality of first planetary gears 212 circumferentially around the axis of the first sun gear shaft 211b, the first planet carrier 211 can be uniformly subjected to the load from the first planetary gears 212 during the operation of the first reduction gear set 210, so as to prolong the service life of the first planet carrier 211.

[0052] In further embodiments of the present application, the first reduction gear set 210 further comprises a first limiting plate 213, the first planet shaft 211a penetrates through the first limiting plate 213, and the first limiting plate 213 abuts against the end face of the first planetary gear 212 away from the first planet carrier 211.

[0053] For example, as shown in FIG. 1, the right end of the first planet carrier 211 is provided with a left and right extending first sun gear shaft 211b, the left end of the first planet carrier 211 is provided with a plurality of left and right extending first planet shafts 211a, the plurality of first planet shafts 211a are distributed circumferentially around the axis of the first sun gear shaft 211b, and each of the first planet shafts 211a is sleeved with a first planetary gear 212. Figure 5 The first reduction gear set 210 further comprises a first limiting plate 213, the first limiting plate 213 is located at the left end of each first planetary gear 212, each first planet shaft 211a is connected with the first limiting plate 213, and the first limiting plate 213 limits the first planetary gear 212 in the left and right directions in cooperation with the first planet carrier 211.

[0054] In some embodiments of the present application, the first limiting plate 213 is provided with a connecting column 213a, and the connecting column 213a is connected with the first planet carrier 211.

[0055] For example, as shown in FIG. 1, the right end of the first limiting plate 213 is provided with a left and right extending connecting column 213a, and the right end of the connecting column 213a is connected with the first planet carrier 211. Figure 5 It can be understood that by arranging the connecting column 213a, the connection strength between the first limiting plate 213 and the first planet carrier 211 can be higher, so as to improve the overall strength of the first reduction gear set 210.

[0056] In further embodiments of the present application, referring to FIG. 1, the first limiting plate 213 is provided with a plurality of connecting columns 213a, and the connecting columns 213a are distributed circumferentially around the axis of the first sun gear shaft 211b in alternation with the first planetary gears 212.

[0057] Figure 5

[0058] ​​It can be understood that, due to the fact that the connecting columns 213a and the first planetary gears 212 are alternately distributed circumferentially around the axis of the first sun gear shaft 211b, the overall stress of the first reduction gear set 210 is more uniform during the operation of the first reduction gear set 210, so that the first reduction gear set 210 is more stable during the operation.

[0059] In some embodiments of the present application, with reference to Figure 2 The reduction gear assembly 200 further comprises a second reduction gear set 230, and the first sun gear shaft 211b is drivingly connected to the input end of the second reduction gear set 230.

[0060] It can be understood that, by providing the second reduction gear set 230 and drivingly connecting the first sun gear shaft 211b to the input end of the second reduction gear set 230, the rotational speed of the motor 310 is further reduced by the second reduction gear set 230, so that the output end of the second reduction gear set 230 can output greater torque.

[0061] In further embodiments of the present application, the second reduction gear set 230 comprises a second planetary carrier and a second planetary gear, the second planetary carrier is provided with a second planetary gear shaft and a second sun gear shaft, the second planetary gear is arranged on the second planetary gear shaft and is engaged with the inner tooth surface 222, the first sun gear shaft 211b is engaged with the second planetary gear, and the first sun gear shaft 211b and the second sun gear shaft are coaxially arranged.

[0062] It can be understood that, under the driving of the motor 310, the first planetary gear 212 rotates around its own axis and revolves around the axis of the first sun gear shaft 211b, under the driving of the first planetary gear 212, the first planetary carrier 211 drives the first sun gear shaft 211b to rotate, so that the first sun gear shaft 211b drives the second planetary gear to rotate, since the second planetary gear is engaged with the inner tooth surface 222, during the rotation of the second planetary gear, the second planetary gear will revolve synchronously, so that the second planetary gear can drive the second planetary carrier and the second sun gear shaft to rotate, and thus the rotational speed of the second sun gear shaft relative to the first sun gear shaft 211b can be slower, and the output torque can be greater.

[0063] It should be noted that the number of reduction gear sets can be set according to actual needs, and it is not only limited to one or two reduction gear sets, and the staff can also set a third reduction gear set, a fourth reduction gear set, etc. in the first sleeve 220 according to actual needs.

[0064] Although the embodiments of the utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A driving device, characterized in that: include: A connecting piece (100), wherein the connecting piece (100) is provided with an insertion hole (110); The reduction assembly (200) comprises a first reduction gear set (210) and a first sleeve (220), wherein a first accommodating cavity (221) is provided in the first sleeve (220), an edge of the cavity opening of the first accommodating cavity (221) is welded to one end of the connecting member (100), and the first accommodating cavity (221) is connected to one end of the insertion hole (110), and the first reduction gear set (210) is provided in the first accommodating cavity (221); The driving assembly (300) comprises a motor (310) and a second sleeve (320). A second accommodating cavity is provided in the second sleeve (320). The cavity edge of the second accommodating cavity is welded to the other end of the connecting member (100), and the second accommodating cavity is connected to the other end of the insertion hole (110). The motor (310) is provided in the second accommodating cavity. The output end of the motor (310) passes through the insertion hole (110) and is in transmission connection with the input end of the first reduction gear set (210).

2. A driving device according to claim 1, characterized in that: The connecting piece (100) is provided with a connecting protrusion (120), and the connecting protrusion (120) is passed through the first accommodating cavity (221) and welded to the cavity wall of the first accommodating cavity (221).

3. A driving device according to claim 1, characterized in that: The connecting member (100) is provided with a connecting groove (130), and the edge of the cavity opening of the second accommodating cavity is passed through the connecting groove (130) and welded to the groove wall of the connecting groove (130).

4. A driving device according to claim 1, characterized in that: The cavity wall of the first accommodating cavity (221) is provided with an inner tooth surface (222); the first reduction gear set (210) comprises a first planetary carrier (211) and a first planetary gear (212); the first planetary carrier (211) is provided with a first planetary gear shaft (211a) and a first sun gear shaft (211b); the first planetary gear (212) is provided on the first planetary gear shaft (211a) and meshes with the inner tooth surface (222); and the output end of the motor (310) meshes with the first planetary gear (212).

5. A driving device according to claim 4, characterized in that: The first planetary carrier (211) is provided with a plurality of first planetary gear shafts (211a), the plurality of first planetary gear shafts (211a) are circumferentially distributed around the axis of the first sun gear shaft (211b), and each of the first planetary gear shafts (211a) is provided with a first planetary gear (212).

6. A driving device according to claim 5, characterized in that: The first reduction gear set (210) further includes a first limiting plate (213), the first planetary gear shaft (211a) is passed through the first limiting plate (213), and the first limiting plate (213) abuts against an end surface of the first planetary gear (212) away from the first planet carrier (211).

7. A driving device according to claim 6, characterized in that: A connecting column (213a) is provided on the first limiting plate (213), and the connecting column (213a) is connected to the first planet carrier (211).

8. A driving device according to claim 7, characterized in that: A plurality of connecting columns (213a) are provided on the first limiting plate (213), and the connecting columns (213a) and the first planetary gears (212) are alternately distributed circumferentially around the axis of the first sun gear shaft (211b).

9. A driving device according to claim 4, characterized in that: The reduction assembly (200) further includes a second reduction gear set (230), and the first sun gear shaft (211b) is in driving connection with an input end of the second reduction gear set (230).

10. A driving device according to claim 9, characterized in that: The second reduction gear set (230) comprises a second planetary carrier and a second planetary gear, the second planetary carrier is provided with a second planetary gear shaft and a second sun gear shaft, the second planetary gear is provided on the second planetary gear shaft and meshes with the inner tooth surface (222), and the first sun gear shaft (211b) meshes with the second planetary gear.

Images