CN111684181A

CN111684181A - Reduction box motor

Info

Publication number: CN111684181A
Application number: CN201880088669.7A
Authority: CN
Inventors: 罗冲; 吴振凯
Original assignee: SZ DJI Technology Co Ltd
Current assignee: SZ DJI Technology Co Ltd
Priority date: 2018-09-29
Filing date: 2018-12-06
Publication date: 2020-09-18
Also published as: WO2020062572A1; CN209083943U

Abstract

A reduction gearbox motor comprises a power motor (10), a reduction gearbox shell (20) and a gear set (30) arranged in the reduction gearbox shell (20), wherein at least part of the reduction gearbox shell (20) is sleeved outside the power motor (10) and fixedly connected with the power motor (10), an output shaft of the power motor (10) is provided with a driving gear (13), the driving gear (13) is in gnawing connection with the gear set (30), a reduction gearbox shaft (31) of the gear set (30) penetrates through the reduction gearbox shell (20), the reduction gearbox shell (20) is provided with a flange part (21), the flange part (21) is used for fixing the reduction gearbox motor on corresponding equipment, the interior of the reduction gearbox shell (20) is not easy to be impacted by external force, the reliability is good, the power motor (10) is fixed on the reduction gearbox shell (20), and the installation and the fixation are convenient, impact on the reduction gearbox shell (20) cannot be transmitted to the power motor (10), and the reduction gearbox motor runs stably.

Description

Reduction box motor

Technical Field

The embodiment of the invention relates to the technical field of motors, in particular to a motor with a reduction gearbox.

Background

The reduction gearbox motor comprises a motor, an adapter plate and a reduction gearbox, wherein the adapter plate is used for connecting the motor and the reduction gearbox. Specifically, the adapter plate is fixedly connected to the motor, and the reduction gearbox is mounted on the adapter plate. The reduction gearbox is connected with an output shaft of the motor so as to enable the reduction gearbox to output corresponding rotating speed and torque. The adapter plate is provided with a reserved mounting space which is used for fixing the reduction gearbox motor on corresponding equipment so that the reduction gearbox motor can drive corresponding mechanisms of the equipment to act.

In the related art, the motor is fixed on one side of the adapter plate, the reduction gearbox is fixed on the other side of the adapter plate, and the positioning accuracy of the motor assembly and the reduction gearbox is low, so that the transmission efficiency of the motor and the reduction gearbox is low. In addition, in the running process of the motor of the reduction gearbox, the adapter plate is fixed on the equipment, the shaking amplitude of the reduction gearbox is large, and the installation effect is poor. Especially, when the reduction gearbox is impacted by external force, the reduction gearbox fixed on the adapter plate is easy to fall off.

In addition, the screw runs through reducing gear box and keysets and is fixed in the motor, then the casing of reducing gear box needs to reserve screw installation aperture, leads to the casing obviously to increase. And the screw is fixed to the motor along the axial of reducing gear box, and when the output shaft of reducing gear box received radial impact, the screw produced moment of flexure and transmitted to the motor, easily leads to the motor to damage.

When the screw is locked to the adapter along the radial direction, the output shaft of the reduction gearbox is easy to have the problems of screw loosening and the like in the process of bearing vibration and impact for a long time. And the screw hole on the reduction box casing is pressed close to the root of the reduction box casing, and the reduction box and the motor are easy to damage.

Disclosure of Invention

The invention provides a motor with a reduction gearbox.

According to a first aspect of the embodiment of the invention, the invention provides a reduction gearbox motor, which comprises a power motor, a reduction gearbox shell and a gear set arranged in the reduction gearbox shell, wherein at least part of the reduction gearbox shell is sleeved outside the power motor and is fixedly connected with the power motor, an output shaft of the power motor is provided with a driving gear, the driving gear is in meshed connection with the gear set, a reduction gearbox shaft of the gear set penetrates through the reduction gearbox shell, and the reduction gearbox shell is provided with a flange part.

Optionally, the power motor comprises a motor body and an adapter fixedly connected to the motor body, the reducer casing is sleeved outside the adapter, and the reducer casing is fixedly connected to the adapter.

Optionally, the reduction gearbox housing is locked to the adaptor through at least one first fastener, and an axis of the first fastener and an axis of an output shaft of the motor main body form a preset angle.

Optionally, the adaptor is provided with a central hole and at least two locking holes surrounding the central hole, the axes of the locking holes are perpendicular to the axis of the central hole, the output shaft of the motor main body penetrates through the central hole and is fixedly connected with the driving gear, and the first fastening piece penetrates through the shell of the reduction gearbox and is locked in the locking holes.

Optionally, the motor main body comprises a casing, and the adaptor is detachably connected with the casing.

Optionally, the adaptor is further provided with at least two fixing holes, and the adaptor passes through the fixing holes through a second fastener and is connected to the housing in a locking manner.

Optionally, the motor main body comprises a casing, and the adaptor is integrally formed with the casing.

Optionally, the reduction gearbox housing includes an annular wall and an end wall sealed at one end of the annular wall, the annular wall is sleeved outside the power motor and is fixedly connected with the power motor, the reduction gearbox shaft penetrates through the end wall, and the flange portion protrudes outward from the outer side surface of the annular wall.

Optionally, the gearbox housing further comprises a gear portion disposed on an inner side surface of the annular wall, and the gear set is engaged with the gear portion.

Optionally, the gear set comprises at least one planetary reduction gear set meshed with the driving gear, and the reduction box shaft is fixedly arranged at the output part of the planetary reduction gear set.

Optionally, the planetary reduction gear set comprises a fixed frame, at least one planetary gear assembled on one side of the fixed frame, and a fixed shaft installed on the other side of the fixed frame, the reduction box shaft is a fixed shaft of one of the planetary reduction gear sets, and the planetary gear is respectively meshed with the driving gear and the reduction box housing.

Optionally, the gear train includes first reduction wheelset and second reduction wheelset, drive gear with first reduction wheelset meshing connects, first reduction wheelset be equipped with install in the driven gear of fixed axle, driven gear with second reduction wheelset meshing connects, the reduction case axle is established as the fixed axle of second reduction wheelset.

Optionally, the gear set comprises a dead axle reduction gear set assembled on the reduction gearbox shell, the driving gear is in meshed connection with the dead axle reduction gear set, and the reduction gearbox shaft is set as a power output shaft of the dead axle reduction gear set and penetrates through the reduction gearbox shell.

Optionally, the gearbox motor further comprises a lock nut mounted to the gearbox shaft.

Optionally, the gearbox motor further comprises a locking member connecting the gearbox shaft and the locking nut.

The technical scheme provided by the embodiment of the invention has the following beneficial effects:

the reduction box shell is provided with a flange part which is used for fixing the reduction box motor on corresponding equipment, and the power motor and the gear set are not easy to be impacted by external force and have good reliability. The power motor is fixed on the shell of the reduction gearbox, and is convenient to install and fix. Impact on the shell of the reduction gearbox cannot be transmitted to the power motor, and the motor of the reduction gearbox runs stably.

Drawings

Fig. 1 is a schematic structural view of a reduction gearbox motor according to an exemplary embodiment of the present invention.

Fig. 2 is a schematic sectional structure view of a reduction gearbox motor according to an exemplary embodiment of the present invention.

Fig. 3 is an exploded view of a reduction box motor according to an exemplary embodiment of the present invention.

FIG. 4 is a schematic top view of a gearbox housing according to an exemplary embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a power motor according to an exemplary embodiment of the present invention.

In the figure, a power motor 10; a motor main body 11; an adaptor 12; a central aperture 121; a locking hole 122; a fixing hole 123; a hollowed-out portion 124; a drive gear 13; a gearbox housing 20; a flange portion 21; the fitting portion 22; an annular wall 23; an end wall 24; a gear portion 25; a connecting hole 26; a gear set 30; the reduction gear shaft 31; a first reduction gear set 32; a second reduction gear set 33; the planet wheels 34; a fixed frame 35; a fixed shaft 36; a driven gear 37; a first fastener 40; a lock nut 50; a stopper hole 51; a locking member 60.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings, in which like numerals in different drawings represent the same or similar elements, unless otherwise specified. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present invention. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.

As shown in fig. 1 and 2, in an embodiment, the reduction gearbox motor includes a power motor 10, a reduction gearbox housing 20, and a gear set 30 installed in the reduction gearbox housing 20, and at least a part of the reduction gearbox housing 20 is sleeved outside the power motor 10 and is fixedly connected with the power motor 10. The output shaft of the power motor 10 is provided with a driving gear 13, the driving gear 13 is meshed with a gear set 30, a reduction box shaft 31 of the gear set 30 penetrates through a reduction box shell 20, and the reduction box shell 20 is provided with a flange part 21.

The gearbox housing 20 is provided with a flange portion 21, optionally the flange portion 21 is integrally formed with the gearbox housing 20. The reduction box motor is fixed on the corresponding equipment through a flange part 21, so that a driving gear 13 fixed on an output shaft of the power motor 10 is meshed and drives a gear 13 group to operate, and a gear group 30 outputs corresponding torque and rotating speed. The gear set 30 is disposed within the gearbox housing 20 and is protected by the gearbox housing 20. When the reduction gearbox shell 20 of the reduction gearbox motor is acted by external force, the reduction gearbox shell 20 transmits the external force gear set 30 to equipment through the flange part 21, the external force is prevented from acting on the gear set 30 and the power motor 10, and the running stability of the reduction gearbox motor is good.

The reduction gearbox housing 20 is sleeved on the power motor 10, and optionally, the reduction gearbox housing 20 and the power motor 10 are fixedly connected into a whole at the contact part of the two. For example, the reduction gearbox housing 20 is sleeved outside the power motor 10, wherein the reduction gearbox housing 20 is located on one side of an output shaft of the power motor 10, and the reduction gearbox housing 20 is fixedly connected to the power motor 10 along the radial direction of the power motor 10. Optionally, the fixing of the power motor 10 to the reduction box housing 20 includes at least one of the following ways: fastener locking, cementing agent cementing connection, buckle connection, interference fit connection, threaded connection and the like.

As shown in fig. 2 and 3, in an embodiment, the power motor 10 includes a motor body 11 and an adaptor 12 fixed to the motor body 11, the reduction gearbox housing 20 is sleeved outside the adaptor 12, and the reduction gearbox housing 20 is fixed to the adaptor 12.

The adaptor 12 is fixed to the motor body 11 and surrounds the output shaft, which protrudes out of the adaptor 12 and is engaged with the gear set 30 through the driving gear 13. In an alternative embodiment, the motor body 11 comprises a housing, and the adaptor 12 is detachably connected to the housing. The adaptor 12 is fixed to the housing of the motor body 11 by fastening, welding, or inserting.

In an alternative embodiment, as shown in fig. 3 and 5, the adaptor 12 is further provided with at least two fixing holes 123, and the adaptor 12 passes through the fixing holes 123 by a second fastening member and is locked and connected to the housing. The fixing hole 123 penetrates the adaptor 12, the axis of the fixing hole 123 is substantially parallel to the axis of the output shaft, and the second fastening member penetrates the fixing hole 123 and locks the adaptor 12 to the housing of the motor main body 11. The adaptor 12 is provided as an extension of the housing and the second fastener is axially locked to the housing, facilitating the fixing of the adaptor 12.

Optionally, the adaptor 12 is provided as a cylindrical structure, the second fastening member locks the adaptor 12 to the housing, and the adaptor 12 is conveniently fixed to the motor body 11, and the structure is simple. The fixing hole 123 is provided as a counterbore structure, and the end face of the second fastener is located in the counterbore. Optionally, the adaptor 12 is provided with a counterbore or through-hole shaped hollowed-out portion 124, and the center line of the hollowed-out portion 124 is approximately parallel to the axis of the output shaft, so as to maintain the strength of the adaptor 12 and reduce the weight of the adaptor 12.

In an alternative embodiment, the motor body 11 comprises a housing, and the adaptor 12 is integrally formed with the housing.

The reduction gearbox housing 20 is sleeved outside the adaptor 12 and is fixedly connected with the adaptor 12, and optionally, the fixing of the reduction gearbox housing 20 and the adaptor 12 comprises at least one of the following modes: fastener locking, cementing agent cementing connection, buckle connection, interference fit connection, threaded connection and the like.

For example, the adaptor 12 is connected to the gearbox housing 20 by plugging, and the adaptor and the gearbox housing are connected by cementing agent. Or the adaptor 12 is inserted into the reduction gearbox housing 20 and is in interference fit with the reduction gearbox housing 20, so that the power motor 10 is fixedly connected with the reduction gearbox housing 20. Or the adapter 12 is assembled to a preset position of the reduction gearbox shell 20, and the two are welded and connected into a whole.

In an alternative embodiment, the gearbox housing 20 is locked to the adaptor 12 by at least one first fastener 40, the axis of the first fastener 40 being at a predetermined angle to the axis of the output shaft of the motor body 11.

The first fastener 40 passes through the reducer casing 20 and is lockingly connected to the adaptor 12 to lock the reducer casing 20 to the adaptor 12. The output shaft of the motor body 11 penetrates through the adapter 12, and the axis of the first fastening piece 40 and the axis of the output shaft form a preset angle, that is, the first fastening piece 40 penetrates through the reduction gearbox shell 20 and is locked on the adapter 12 along the preset angle. For example, the axis of the first fastener 40 is substantially perpendicular to the axis of the output shaft, i.e., both are at an angle of about 90 degrees. Of course, the axis of the first fastener 40 may also be disposed obliquely with respect to the axis of the output shaft. The reduction gearbox housing 20 is connected to the adaptor 12 by a first fastener 40, which facilitates connection.

In an alternative embodiment, the adaptor 12 is provided with a central hole 121 and at least two locking holes 122 surrounding the central hole 121, the axes of the locking holes 122 being substantially perpendicular to the axis of the central hole 121. The output shaft of the motor body 11 passes through the center hole 121 and is fixedly connected with the driving gear 13, and the first fastening member 40 passes through the reduction gear box casing 20 and is locked to the locking hole 122.

The center hole 121 is provided at a center portion of the adaptor 12, the adaptor 12 is fixed to the motor body 11, and the output shaft of the motor body 11 penetrates through the center hole 121. Optionally, the center of the central bore 121 coincides with the axis of the output shaft. A drive gear 13 is mounted at the end of the output shaft, optionally with an end face of the drive gear 13 spaced a predetermined distance from an end face of the adaptor 12. If the preset distance is set to be 0 to 2mm, specifically, the preset distance is set to be 0.5mm, 1mm, 1.5mm, 2mm, etc. Correspondingly, the gear set 30 is in meshed connection with the driving gear 13, at least part of the plane of the gear set 30 is spaced from the end face of the adaptor 12 by a preset distance, and the driving gear 13 and the gear set 30 are stably driven and occupy small space.

The axis of the locking hole 122 is substantially perpendicular to the axis of the central hole 121, and accordingly, the reduction case housing 20 is provided with the connecting hole 26 corresponding to the position of the locking hole 122. The first fastener 40 passes through the connecting hole 26 and is locked to the locking hole 122 to lock the reduction case housing 20 to the connecting member. The axis of the first fastening piece 40 is arranged along the radial direction of the adapter 12, so that in the process of bearing torque or impact force, the impact force cannot be transmitted to the adapter 12 and the motor main body 11 through the first fastening piece 40, and the running stability of the reduction gearbox motor is good.

As shown in FIGS. 2 and 3, in one embodiment, the reduction gearbox housing 20 comprises an annular wall 23 and an end wall 24 closed at one end of the annular wall 23, and the annular wall 23 is sleeved outside the power motor 10 and fixedly connected with the power motor 10. The reduction gear shaft 31 penetrates the end wall 24, and the flange portion 21 projects outward from the outer side surface of the annular wall 23.

The annular wall 23 and the end wall 24 enclose a barrel-shaped space, and a reduction gearbox shaft 31 penetrates through the end wall 24 and extends outwards, so that the gear set 30 outputs corresponding rotating speed and torque outwards through the reduction gearbox shaft 31 under the driving of the driving gear 13. The reduction box housing 20 is sleeved outside the power motor 10, and specifically, at least part of the annular wall 23 is sleeved at the adaptor 12. Optionally, the annular wall 23 is fixed to the adaptor 12 by means of a fastener lock, a cement bond, a snap fit, an interference fit, a screw thread, or the like.

For example, the connection hole 26 is opened in the annular wall 23, the annular wall 23 is sleeved outside the adaptor 12, and the connection hole 26 is aligned with the locking hole 122 of the adaptor 12. The first fastener 40 is locked to the locking hole 122 through the connecting hole 26 so that the annular wall 23 is sleeved and fixed to the adaptor 12.

The annular wall 23 is sleeved on the adaptor 12 to seal the motor body 11 at the opening end of the reduction gearbox housing 20, so that the gear set 30 is sealed in the barrel-shaped space of the reduction gearbox housing 20, and the gear set 30 is convenient to install. The gear set 30 is installed in the reduction gearbox shell 20, the reduction gearbox shaft 31 penetrates through the reduction gearbox shell 20, the motor body 11 is assembled to the reduction gearbox shell 20 and is in meshed connection with the gear set 30 through the driving gear 13, the meshed connection is convenient, and the assembling precision is high.

In an alternative embodiment, as shown in fig. 3 and 4, the flange portion 21 is protruded from the outer side surface of the annular wall 23, and the flange portion 21 is spaced a predetermined distance from the open end of the reduction gear housing 20. Optionally, the flange portion 21 is located between the attachment aperture 26 and the end wall 24. Optionally, the flange portion 21 is located between the open end of the reduction gearbox housing 20 and the attachment bore 26. Optionally, a flange portion 21 is provided at the open end of the gearbox housing 20.

In an alternative embodiment, the flange portion 21 is provided with a fitting portion 22, the fitting portion 22 being used to fix the reduction gearbox housing 20. Optionally, the mounting portions 22 are spaced apart from at least two mounting holes of the flange portion 21. Optionally, the assembly holes are provided as threaded holes and/or through holes. In a specific embodiment, the fitting portion 22 is provided with three threaded holes and three through holes, wherein the three threaded holes are evenly distributed around the reduction box shaft 31, and the three through holes are evenly distributed around the reduction box shaft 31. The flange part 21 is provided with an assembling part 22 for fixing the reduction gearbox shell 20, so that the installation is convenient and the stress is uniform.

As shown in fig. 2 and 3, the gear set 30 changes the torque and the rotation speed output by the motor of the reduction gearbox through the transmission ratio between each stage of gears, and optionally, the gear set 30 comprises a planetary reduction gear set and a dead axle reduction gear set.

In one embodiment, the gear set 30 includes at least one planetary reduction gear set engaged with the driving gear 13, and the reduction box shaft 31 is fixed to an output portion of the planetary reduction gear set. The gear set 30 is provided as one or more planetary reduction gear sets, and accordingly, the driving gear 13 fixed to the output shaft of the motor main body 11 is located at the sun gear position for driving the planetary reduction gear sets to operate. Accordingly, the reduction gearbox housing 20 further includes a gear portion 25 provided on an inner side surface of the annular wall 23, and the gear set 30 is engaged with the gear portion 25.

The planet wheels 34 of the planetary reduction gear set are in meshing connection with the gear portion 25 in the reduction gearbox housing 20, so that the planetary reduction gear set transmits acting force to the reduction gearbox housing 20 and the rotation of the planetary reduction gear set is stabilized through the reduction gearbox housing 20. The reduction box shaft 31 is arranged at the output part of the planetary reduction gear set so as to output the torque and the rotating speed regulated by the planetary reduction gear set, and the transmission efficiency is high.

In an alternative embodiment, the planetary reduction gear set comprises a fixed frame 35, at least one planetary gear 34 mounted on one side of the fixed frame 35, and a fixed shaft 36 mounted on the other side of the fixed frame 35, the reduction box shaft 31 is provided as the fixed shaft 36 of one of the planetary reduction gear sets, and the planetary gear 34 is meshed with the driving gear 13 and the reduction box housing 20 respectively.

The planetary gear 34 is rotatably mounted on one side of the fixed frame 35 and is in meshed connection with the gear set 30, so that the planetary gear 34 drives the fixed frame 35 to rotate under the driving of the driving gear 13, and meanwhile, the planetary gear 34 rotates around the axis of the planetary gear 34. When the planetary reduction gear set is set to only one stage, the reduction box shaft 31 is the fixed shaft 36, and accordingly, the reduction box shaft 31 is located on the rotation center line of the fixed frame 35. In the rotating process of the fixing frame 35, the reduction box shaft 31 rotates and outputs corresponding torque and rotating speed outwards, and the speed reduction effect is good.

In one embodiment, the fixed frame 35 is uniformly provided with three planetary gears 34, and the three planetary gears 34 are all meshed with the driving gear 13 and the gear part 25 of the reduction gearbox housing 20 simultaneously. The driving gear 13 drives the three planet gears 34 to rotate simultaneously, so that the stress of the fixed frame 35 is balanced, and the operation stability is good.

In an alternative embodiment, gear set 30 is provided as a multi-stage planetary gear set. The gear set 30 includes a first reduction gear set 32 and a second reduction gear set 33, the driving gear 13 is engaged with the first reduction gear set 32, and the first reduction gear set 32 is provided with a driven gear 37 mounted on a fixed shaft 36. The driven gear 37 is meshed with the second reduction gear set 33, and the reduction gear shaft 31 is a fixed shaft 36 of the second reduction gear set 33.

The first reduction gear set 32 and the second reduction gear set 33 are arranged in a superposed mode, the required space is small, and the reduction effect is good. The planet wheel 34 in the first reduction gear set 32 is engaged with the driving gear 13, and the driving gear 13 drives the fixed frame 35 in the first reduction gear set 32 to rotate, so that the fixed shaft 36 fixed to the fixed frame 35 in the first reduction gear set 32 rotates. Correspondingly, the driven gear 37 fixed by the fixed shaft 36 is located at the sun gear position of the second reduction gear set 33, and the driven gear 37 is meshed with the planet gears 34 in the second reduction gear set 33 and drives the fixed frame 35 in the second reduction gear set 33 to rotate under the driving of the driven gear 37, so that the fixed shaft 36 fixed to the fixed frame 35 in the second reduction gear set 33 rotates. The reduction box shaft 31 is a fixed shaft 36, that is, the fixed frame 35 in the second reduction gear set 33 drives the reduction box shaft 31 to rotate, and the reduction box shaft 31 penetrates the reduction box housing 20.

The gear set 30 is a planetary gear set arranged in a multi-stage overlapping manner, so that the speed reduction effect is good, and the transmission efficiency is high. And the axial size of the reduction gearbox shell 20 can be reduced by the superposition arrangement of the multi-stage planetary wheel sets, and the utilization rate of the internal space of the reduction gearbox shell 20 is high.

In one embodiment, the gear set 30 includes a fixed-axis reduction gear set assembled on the reduction gearbox housing 20, the driving gear 13 is in meshed connection with the fixed-axis reduction gear set, and the reduction gearbox shaft 31 is provided as a power output shaft of the fixed-axis reduction gear set and penetrates through the reduction gearbox housing 20.

The gear set 30 is a fixed-axis reduction gear set, wherein the fixed-axis reduction gear set is provided with one or more stages of reduction gears, and the reduction box shaft 31 is enabled to output according to preset rotating speed and torque by adjusting the transmission ratio of the driving gear 13 and the fixed-axis reduction gear set. When the dead axle reduction gear set is set as a multi-stage reduction gear, the axle of the intermediate gear is fixed on the gear of the reduction gear box, and the gear set 30 is fixed conveniently.

In one embodiment, the reduction gearbox motor further comprises a lock nut 50 mounted to the reduction gearbox shaft 31. The reduction box shaft 31 is mounted with a locking nut 50, the locking nut 50 supporting and limiting a driving member locked to the reduction box motor. Such as locking the rotor, linkage, and other power-driven components against the locking nut 50.

Alternatively, the reduction gear box shaft 31 is provided as a screw shaft; and/or, the section of the reduction box shaft 31 is provided with a positioning surface so that the reduction box shaft 31 can transmit torque and is convenient for installing and fixing the driving piece.

In an alternative embodiment, the gearbox motor further comprises a lock 60 connecting the gearbox shaft 31 with the lock nut 50. The corresponding limiting holes 51 are formed in the reduction gearbox shaft 31 and the locking nut 50, and the locking piece 60 sequentially penetrates through the locking nut 50 and the reduction gearbox shaft 31, so that the locking nut 50 is limited at the preset position of the reduction gearbox shaft 31, and the positioning effect is good.

The features of the embodiments and embodiments described above may be combined with each other without conflict. The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

A reduction gearbox motor is characterized by comprising a power motor, a reduction gearbox shell and a gear set arranged in the reduction gearbox shell, wherein at least part of the reduction gearbox shell is sleeved outside the power motor and is fixedly connected with the power motor, a driving gear is assembled on an output shaft of the power motor and is in meshed connection with the gear set, a reduction gearbox shaft of the gear set penetrates through the reduction gearbox shell, and the reduction gearbox shell is provided with a flange part.
The reduction gearbox motor according to claim 1, wherein the power motor comprises a motor body and an adaptor fixedly connected to the motor body, the reduction gearbox housing is sleeved outside the adaptor, and the reduction gearbox housing is fixedly connected to the adaptor.
The reduction gearbox motor of claim 2, wherein the reduction gearbox housing is locked to the adaptor by at least one first fastener, the axis of the first fastener being at a predetermined angle to the axis of the output shaft of the motor body.
The reduction gearbox motor according to claim 3, wherein the adaptor is provided with a central hole and at least two locking holes surrounding the central hole, the axes of the locking holes are perpendicular to the axis of the central hole, the output shaft of the motor body penetrates through the central hole and is fixedly connected with the driving gear, and the first fastening piece penetrates through the reduction gearbox shell and is locked in the locking holes.
The reduction gearbox motor of claim 2, wherein the motor body comprises a housing, and the adaptor is removably connected to the housing.
The reduction gearbox motor according to claim 5, wherein the adaptor is further provided with at least two fixing holes, and the adaptor is passed through the fixing holes by a second fastener and is locked and connected to the housing.
The reduction gearbox motor of claim 2, wherein the motor body comprises a housing, the adaptor being integrally formed with the housing.
The reduction gearbox motor according to claim 1, wherein the reduction gearbox housing comprises an annular wall and an end wall sealed at one end of the annular wall, the annular wall is sleeved outside the power motor and fixedly connected with the power motor, the reduction gearbox shaft penetrates through the end wall, and the flange part protrudes outwards from the outer side surface of the annular wall.
The reduction gearbox motor of claim 8, wherein the reduction gearbox housing further comprises a gear portion disposed on an inside surface of the annular wall, the gear set being engaged with the gear portion.
The reduction gearbox motor according to claim 1, wherein the gear set comprises at least one planetary reduction gear set meshed with the driving gear, and the reduction gearbox shaft is fixedly arranged at the output part of the planetary reduction gear set.
The reduction gearbox motor according to claim 10, wherein the planetary reduction gear set comprises a fixed frame, at least one planet wheel assembled on one side of the fixed frame and a fixed shaft installed on the other side of the fixed frame, the reduction gearbox shaft is a fixed shaft of one of the planetary reduction gear sets, and the planet wheel is respectively meshed with the driving gear and the reduction gearbox shell.
The reduction gearbox motor according to claim 11, wherein the gear set comprises a first reduction gear set and a second reduction gear set, the driving gear is engaged with the first reduction gear set, the first reduction gear set is provided with a driven gear mounted on the fixed shaft, the driven gear is engaged with the second reduction gear set, and the reduction gearbox shaft is provided as the fixed shaft of the second reduction gear set.
The reduction gearbox motor according to claim 1, wherein the gear set comprises a dead axle reduction gear set assembled on the reduction gearbox housing, the driving gear is meshed with the dead axle reduction gear set, and the reduction gearbox shaft is a power output shaft of the dead axle reduction gear set and penetrates through the reduction gearbox housing.
The reduction gearbox motor of claim 1, further comprising a lock nut mounted to the reduction gearbox shaft.
The reduction gearbox motor of claim 14, further comprising a lock connecting the reduction gearbox shaft and a lock nut.